An End to Ignorance

by Tsunogami

Rating: mature
Tags: My Little Pony: Friendship is Magic, Princess Cadance, Rarity, Other, Romance, Sex, Science Fiction, Slice of Life, Twilight Sparkle, Main 6
Length: 15705

Ignorance is a difficult thing to maintain whether by a civilization about its world or by a pony about her friends. Eventually awareness will dawn.

This story has chapters which will contain heavy diaper usage/scat + a few other random fetish themes. You have been warned.

Things this story does not nor ever will contain: adult baby, regression, bondage, or drug use themes.

Published 2015-10-10 22:30:01 UTC
Last updated 2016-04-22 06:31:22 UTC

Prologue: The Darkening Skies

Prologue: The Darkening Skies

The swiftly darkening skies could only mean one thing, there was a hailstorm coming in. Its boiling dark greenish underside of ragged clouds constantly torn apart from raging winds was just becoming visible over the steep headwall of the valley.

Twilight Sparkle sighed in exasperation as a jagged bolt of blue tinted lightning struck one of the higher pinnacles of rock along the valley ridge. It seemed that the good clear weather this year’s expedition had been lucky enough to enjoy while making the mountain trek to this location and setting up their semi-permanent research camp was about to come to a swift and violent end. She stood stoically on a large flat-topped boulder, back legs spread slightly for greater stability, mane and tail whipping in the strengthening wind.  She looked down upon her expedition’s camp situated on one of the few relatively flat areas clustered near the large swift stream which inhabited the valley floor, it’s blue tumbling flow crashed over massive boulders and swerved violently around still larger ones. This minor torrent provided the best supply of pure cooking and cleaning water that a wilderness camp could hope for.

Though this was the third archeological expedition the newly ascended -it had only been eight years ago- Princess of Friendship had led it was the first to come deep into the interior of the Unicorn Range over a thousand kilometers from the familiar rolling hills and quaint villages of the Celestial Valley. However, Twilight forcibly reminded herself; as chilly and apparently stormy as this place may be she was glad not to attend another expedition into the arid waste south of the Everfree Plains. It wasn’t the location itself that put her on edge; it was the city that had been unearthed there five years prior. Perched amid the crumbling dusty plateaus it was a city not only built by and purely for the Unicorn race but a city built after the Celestial Ascension, after the foundation of Old Equestria nearly two thousand years gone. A city purposely far removed from Alicorn rule to allow the inhabitants to continue in their remorseless ideology of racial purity that had infected the Unicorn Kingdoms of old for thousands of years. Twilight figured she would likely spend the rest of forever being unable to forget the discovery of the self-inflicted horror that had eventually overtaken that eternally damned place.

Shaking herself mentally to be rid of thoughts of such distant yet unsettling locations Twilight turned her attention back to the newly erected camp. It was overall, Twilight decided, a good campsite considering the difficult surroundings. Comprised of near on fifty, one to four-pony tents of various shades of brown and green fabric arranged in rough concentric circles around a trio of larger tents. A dining tent, a meeting and equipment storage tent, and a somewhat more ornate tent provided by the Chrystal Empire which Twilight would be sharing with her dear friend, childhood filly-sitter, and occasional lover, Princess Cadance. Cadance’s company at least would be enough to keep Twilights spirits up no matter how many storms she would have to put up with.

Truly if it wasn’t for the frustrating propensity that the central Unicorn Range had for generating powerful autumn thunderstorms which had a nasty habit of appearing over the mountain peaks with almost no warning and producing hailstones large enough to give serious injury to a pony so unlucky as to find themselves stranded outdoors, she might even have gone so far as to consider this valley an unusually good place to come on vacation this time of year. What with the Aspen Trees beginning to turn their famous blazing yellow. Incidentally this weather phenomena was why all the members of the expedition, not just those ponies hired to help with carrying supplies up into the valley from the tiny villages forty kilometers back down the steep trail but also the archaeology members themselves were rushing around like flustered chickens busily securing equipment and reinforcing tents before said items could be beaten down and blown away by the powerful winds and hail of the swiftly approaching storm.

Well, the Princess of Friendship decided with another sigh as she shook her mane and turned back to descend the path down to her large circular tent, it seemed that her planned early evening excursion up the precarious switchback trail to the dig site would have to wait until the first light of the morning. She hadn’t even been here at camp for more than eight hours and already her meticulously detailed schedule was in for a complete revision.

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Princess Cadance looked up from her investigation of some promising looking mushrooms growing between two moss covered boulders perched above the roaring stream five meters below. She could see in the swiftly dimming light the lone violet furred figure of a young Alicorn turn off of and walk down behind a large flat boulder a bit above the arranged tents. Cadance smiled to herself as she resumed her progress toward camp having decided that fat brown mushrooms, no matter how tasty, were not worth getting caught out in a storm over. It was the Alicorn with the light purple coat who was responsible for her smile, as it had been far too long in her estimation since she and Twilight had been able to properly spend time with each other. It had taken a good few years of careful attention and guidance but the Chrystal Empire was once again becoming able to function under its own governance without her and her Imperial Military Consort, (a posting steeped in tradition) having to guide the populace by the hoof every step of the way.  This improving situation allowed for either her or the Prince to spend longer periods away from the Chrystal Palace in the far north and come south to Equestria where under the pretense of maintaining strong diplomatic ties with the central Equestrian government they could relax in a kingdom which they didn't have to bother overseeing. It was ironic, then, Cadance mused to herself that she should be spending her time out here in a primitive wilderness camp about to be pounded by a vicious mountain thunderstorm when she could be sprawled out on a goose down body pillow next to a hot spring-fed pool in any one of several elite Canterlot bathhouses having her every need attended to by beautiful teen mares. However Cadance knew better than to believe that such an experience would be any better than what she could and indeed did have available to her in the Empire. She didn't go on these trips to be pampered, she had enough of that in her daily routine, she departed the Empire on occasions like this to have an adventure and in her experience there were few better ways to find adventure than to tag along with one of the most powerful, wealthy, unnaturally curious, intelligent, and yes adorably sexy ponies to be found in the world.

Within the circle of tents and covered equipment the gusting winds seemed to loose something of the haunted quality to be found amongst the swaying trees of the darkening forest.  With the imminent onset of the first bands of rain Cadance formed a softly glowing force bubble about her body tinted a light blue to match the aura of her horn. Despite the fact the she had performed the creation of a force bubble countless times throughout her life whether just for practice or out of necessity and could do it without thinking as easily as she could place one hoof in front of the other, she could if she concentrated, feel the binding energy somehow adding structure to the air around her. It was almost as if on the point of performing the spell she became aware of an ever present granulation in the air on a scale so small it would be impossible for anypony to see yet she felt nonetheless as though the field was taking thoes loose grains and somehow gluing them together in a rigid structure and expanding that outwards. She had no words to describe the sensation of the process and though she had considered investigating some text on the subject of which she was sure many could be found in the Imperial Archives. She had never gotten around to uncovering anything conclusive on the matter and yet again reluctantly stored such considerations in her mental category of intriguing thoughts that she ought to ask Twilight about.

Body properly shrouded from the now beating rain Cadance came crunching down the newly spread path made of stone chips towards the center of the camp. She couldn’t help but notice that a few of the ponies she passed by glancing her way through open tent flaps had slight frowns of worry creasing their faces as they gave small bows of their heads in respect to the Princess of Love. This concerned Cadance slightly, she was quite sure this behavior was due to the fact that many of these ponies probably felt at least some trepidation at seeing an Imperial Princess out in the rain having to shield herself from said rain and not accompanied by any guards. A situation that they were afraid, she was sure, would reflect badly on the conduct of the expedition members if word were to get out. She would have to take the time tomorrow to reassure them that she was very much here of her on volition and that they did not bear any responsibility if her solid gold horseshoes got muddy or her mane, Celestia forbid, got damp. It never failed to worry and exasperate her, at least to some degree, how ponies always seemed to be surprised when royalty acted in any manner other than stuck up and prissy.

As Cadance approached the large tent directly in the center of the their little portable village the right hoof flap of the tent flipped open and immediately out popped the aging yet still spry head of Dr. Oldstone, one of the preeminent researchers of the Royal Academy of Science and Magic.

“Ah! It’s such a relief to see that you’ve gotten back! And just in time it seems!” Dr. Oldstone said looking through the dome of the force bubble as the fat drops of rain pounded down over its glass-like surface.

“We were all afraid that you wouldn’t be able to return in time!”

“I’m sorry for worrying you Professor, I was distracted by the beauty of the countryside on my little hike of the surrounding area and nearly didn't see the storm coming until it was in the valley itself. I’ll make sure to get home sooner next time.” Cadance said with a giggle. This got something of a blush out of the lively old professor.

“Was there something you wished to discuss with me?” Cadance asked while turning to trot under the tent awning and through the open flap.

The “command tent” as it was rather pompously referred to was essentially a large rectangular canvas covered room large enough for around ten ponies to fit comfortably inside staked solidly to the ground with two dozen long steel spikes. This capacity was of course only true if and when the tent was empty which was certainly not the case at the moment. A third of it was piled to the celling with boxes of research materials including not fewer than a hundred charts by Cadance’s estimation and several times that number of books, mostly still packed away in boxes. Cadance couldn’t help but cringe inwardly at the thought of the ponies who had been given the task of getting all thoes books from the end of the wagon trail twenty kilometers back. The next third was filled with a large wooden table covered with yet more books and charts and from the looks of things professor Oldstone had probably gotten into his research before the tent itself had been raised up around him.

“Well… truth be told…” he said looking somewhat sheepish, “I had been expecting Princess Twilight to be with you as she is the one who had asked me for some input on a hypothesis or two of hers earlier in the day and I have only just now begun to feel confidant that I can give her good enough answers to her questions.”

“Oh, well I suppose I could go and find her if-” started Cadance.

“Ah, goodness no!” Interjected the old professor.  “I wont have you going out to hunt down Princess Twilight just for my sake, and especially not in such weather! Why I should think Celestia would have me thrown out of the Academy is she knew I was imposing myself so!”

“Hardly." Cadance said while mentally rolling her eyes. "Celestia isn’t the sort of mare to do such things, After all, even Prince Blueblood is still allowed in the castle, well, every once in a while at least…” Cadance trailed off at that realizing she probably wasn’t helping the conversation along anymore.

“Well regardless, it wouldn’t be proper.” Continued Dr. Oldstone. “Though since you are here, I might as well fill you in on what the princess and I were discussing earlier.” The Doctor said with a gleam in his eye that told Cadance he couldn’t resist the opportunity to lecture a new “student” who had so carelessly let herself be drawn into his domain.

“The mystery” he started in, striding over to the large table covered in various maps and pointing to what must have been a representation of the valley they were currently standing in.  “Began some 16 years ago when an old colleague and mentor of mine was doing a survey of early Tribal-Era Unicornia villages and watch posts in this section of the Range to better understand the Unicornia military strategies for defense at the time.  This era nearly six thousand years ago now is one of the first we have any real record of and was of course immediately after the first alliances the Kingdom of Unicornia had made with the Pegasi state and though things had gone well for over a century the Unicorns still had not by this point, and really never did I’m sorry to say, get over their fear of the Pegasi.”

At this he gave Cadance an easy to miss sidelong glance; (to judge her reaction she thought) knowing, as did the rest of the civilized world that Cadance had been born a Pegasus. “Thus,” he continued on, the Unicorns developed a habit of building watch towers and other minor fortifications in the tallest places they could figure out how to inhabit so that the Pegasi could not so easily get away with some sneak attack from high in the air.”

“This is why there are ruins of not one but three watch towers along the edges of this valley and with these eventually came Unicorn settlements along the valley floor where it was figured there would be a certain degree of safety should any conflict come about.” Early unicorns always were a suspicious lot I must say.” chuckled Dr. Oldstone, his light grey mustache fluttering with his soft laughter.

“This unusually high population left behind an equally unusual selection of ruins for an enterprising archeologist to study. Not only were there many sites to investigate but their remoteness meant they were well preserved as there had been nopony around to dig up the soil for farming or haul away ancient cut stone blocks to construct new houses as has happened in may other locations across Equestria.”

“My collogue, a certain Dr. Feldspar, had already visited this valley twice before and had spent most of his time looking at the sites surrounding Mid Lake. It was the year 996 when he arrived in the valley for his third trip.”

“Do you know Princess Cadance what occurred here during the winter of 996?” Asked Dr. Oldstone with the expectancy only a lifelong instructor could muster.

“…996? I was still a teen living in Canterlot back then, I mostly remember that being the year the fungus farming industry was privatized. And there were some scattered reports of an Earthquake, though I’m not sure if I recall…” Cadance trailed off.

“Oh, Don’t let it bother you Princess, I’m surprised you were aware of it at all, it was a while ago after all and this area of the mountains was even less populated than it is now. What occurred was rather a large Earthquake as it so happens! Came as quite a surprise to the geologists at the time I assure you, we had not seen any evidence of past earthquakes in the region and had thought the bedrock of the area to be quite stable.”

“Well, anyway, back to the story!” continued the professor.

When Dr. Feldspar arrived in the valley in late spring of that year he was fascinated by the evidence of strong ground movement all around him, rock slides, tumbled boulders, and unfortunately some damage to the various stone ruins. However he was utterly shocked when he came further up the valley and found that the entirety of Mid Lake had vanished!”

"Mid Lake?" I didn't see that on the map." Cadance couldn’t help mentioning in surprise.

“Nor would I expect you to, its no longer there. But let us not get ahead of ourselves now! …Um, Princess.” Dr. Oldstone hastily added.

"Now, Princess, I am assuming you know about Dry Falls, the cliff face that is about three kilometers downstream of High Lake?”

When Cadance nodded in the affirmative the professor continued.

“Well then, when Dr. Feldspar came up the valley he noticed before getting to the missing lake that Dry Falls was dry. This may seem now to be a redundant thing to say but before 996 Dry Falls was known as Mist Falls and the falls were very much active. However the stream which had once got over the top of the cliff was now emerging from a network of springs along the base of said cliff. It was only after finding the lake dry that Dr. Feldspar began to understand what was happening. You see the reason that Mid Lake and the lakes above and below exist at all is that some 47,000 years ago a series of large basaltic lava flows came down into the valley and dammed up the stream. The water collected behind this new rock barrier and eventually flowed over the top of it and down the other side forming the waterfalls and cascades that make this valley so beautiful. In the case of Mid Lake the ancient lava flow that created the lake has weak and fractured lower layers. These fractures were once fully clogged with eroded silt from the water flowing through them and rubble chokes.  When the earthquake occurred it widened these gaps and helped the water to flush out the debris. The process was not immediate but the flow rate was increased to the point that Mid Lake slowly drained out through these widened fractures over the course of several months so that by the time Dr. Feldspar arrived the lake was gone. It may return eventually given enough time assuming that the springs at the base of Dry Falls ever become blocked up again.

“And so this means that…?” Cadance asked hoping there was indeed going to be a point to this exposition.

“Ah, well you see, with the lake gone Dr. Feldspar could easily see what had been under water and to his amazement there was not only the foundation of an ancient stone structure that had been previously submerged but below that was a basement level though this was still mostly full of water. It was determined by Dr. Feldspar and several of his associates at the time, myself included, that this structure had once been a mill for grinding grain and the basement level was a collection of underground storage rooms. Here are the two important points however, the first is that the lower meter of the stone wall is surrounded by a lava flow which can easily be seen to merge with the much thicker layers downstream and the second and most important point is that being a mill, it would have been built next to the stream at the time of its construction. A stream that had not flowed for any great length of time since the lava dammed up the river!

“Which happened 47,000 years… but that can’t possibly…” continued Cadance uncertainly.

“Rather what we thought ourselves in the Academy at first, but once we had our suspicions we began to look for other evidence in places we normally never would have bothered. What we did was we began to excavate the ground underneath the lava flow for conformation. I admit there were times we felt that we were wasting our time and money but we were persistent and now it seems such has paid off. Two years ago after a decade of digging we have begun to find evidence of habitation. We now have extracted several carved blocks of stone along with what appears to be a metal sheet and some hoof tools. All would have been located on ground level 47,000 years ago and were consumed when the lava flowed over and around them.”

Cadance’s eyes had widened at this revelation, it was one thing to consider some sort of extremely primitive paleo-pony artifacts from so long ago but evidence of a civilization potentially as advanced as modern Equestria? It was…rather startling to say the least.

“Now I see you are beginning to grasp the magnitude of the mystery we find ourselves in, and why it was decided to conduct extensive research here in these mountains.” Dr. Oldstone said watching Cadance’s expression.”

“But if this is so revolutionary, and I can see that it is, why have I not heard of it before now? I would think such a discovery would be the talk of Canterlot, for a while at least.”

“You see Princess Cadance,” Dr. Oldstone said with a conspiratorial smile, now that I have discussed the matter with you that makes you…probably the sixth pony in the world who knows what revelations this valley hold.”

“Only the sixth! Why the secrecy? Why tell me? …Why the uncertainty in the number?”

“Goodness haha! One question at time Your Highness. The secrecy is that exceptional claims require exceptional evidence, and we have been working for years to build up that evidence so we don't get immediately run out of the scientific community for being old eggheads that have finally cracked when we go public with our findings here. As to why I told you, well, the circumstances were good you see, you came by alone during a rather strong storm which would make eavesdropping not only near imposable but very unpleasant for the pony trying to listen in from outside the tent. Furthermore you are after all, an Alicorn Princess of Equestria -yes I understand you rule in the Empire now but we all know where you were brought up and who assisted in your Ascension. Your loyalty to Equestria is beyond any doubt. Also being a Princess and being on this expedition… well, you don't think I would have blathered all this to some undergraduate assistant do you?” asked Dr. Oldstone full of mirth.

“Well, it is nice to know that ponies hold me in such high regard, Thank you for seeing me as being so trustworthy. Now, if only I could get some of the older Equestrian aristocratic families to think the same…”

“Ha! Well, I apologize but I don't think I would be of much help there, I may have the patience to work on a secretive archeology project for fifteen years but dealing with nobility is another thing entirely!” chuckled the Professor.

“It has been a pleasure talking with you professor.” Cadance said inclining her head slightly.   Since you mentioned the storm a minute ago I noticed that it seems to have let up a bit, or at least the hail as stopped. Twilight is probably beginning to worry about where I may have gotten off to by now knowing her.

“Oh, goodness, I hope I haven’t delayed you unnecessarily.” Dr. Oldstone said with a tinge of worry in his voice.

“Hardly” Cadance replied, “Twilight is a grown mare, she can see to herself.” Well, sometimes. Cadance thought remembering a past event or two. “Don't worry on my account.” Cadance reassured him while turning to leave the tent. “I’m sure we will have more opportunity to discuss matters in the days ahead.”

“Have a good evening Doctor.” Cadance said while stepping out into the still heavily falling rain.

“And a good evening to you as well Princess!” the professor said his voice rising to be heard over the noise of the continuing storm as another rumble of thunder rolled through the now open tent flap.

Cadance, again enveloped in her softly glowing force bubble trotted onto the sodden path headed for the rather more ornate and blessedly less cramped tent where she hoped to find a lavender pony to reacquaint herself with.

Chapter 1: Reunions

Chapter 1: The Place Where Things Got Wet

Twilight Sparkle was feeling nervous. Which, upon consideration was oddly comforting.  After all, she considered if she didn't feel a little nervous right now she would be concerned for her overall sanity. It all came down to the fact that she had to use the bathroom. Such a situation was of course hardly unusual by itself.  It was something she, like any normal pony did several times a day without any overt consideration on the matter. However now she had suddenly realized there were options available to her that she had never quite planned on due to events coming together more conveniently than expected. First was the tent. Twilight Sparkle was, despite her inordinately high status in pony society a mare with very basic wants and needs. Though technically she had been born a noble it was to a branch of her house so distant and unconnected that the relation they had to any old family money and power was nonexistent. That's not to say she had grown up poor, far from it in fact. Her father was the Royal Astronomer and her mother had been, at least up until Twilight had been born, making too much of a demand on her time, a schoolteacher. It was simply that none of their money and status had come from family history.  Growing up with well-to-do but highly practical parents meant that Twilight normally never considered luxury until it was placed right under her muzzle and sometimes not even then. Therefore when she had signed on to be an administrator for this expedition she had packed a standard tent and camping supplies and considered the matter dealt with.

Cadance, with the backing of her Empire however, had had grander plans.

The Chrystal Empire had upon learning of their ruler’s desire to accompany the Princess of Friendship on a “vacation” to the Unicorn Range had made sure to provide her with not only a luxurious octagonal light green tent with gold trim but a pair of guards/servants as well. Not to mention furnishings of considerable opulence (by camping standards) on the inside.  Cadance had mentioned in passing that the Empire had wanted to provide her with considerably more than they did but she was able to talk them out of most of it.

It was for this reason that despite all her pre-trip expectations she found herself standing fully upright in sleeping accommodations superior to that of most inns. There was a central lightweight freestanding aluminum wood burning stove giving off wonderful warmth against the damp high altitude chill of the rainy night outside, a pair of surprisingly comfortable foldout beds with thick patterned blankets and pillows for each, not to mention plush rugs of various colors overlapping each other in a circle around the stove. At the end of one of the beds was where the guard ponies had carefully staked Twilights supplies and various personal items. A stack rather smaller than Cadance’s she noted with a bit of amusement.

This was not to say however that everything Twilight had brought with her was purely necessary. Thoes things were of course packed well away from anyplace where they could be easily seen in case of carelessness on Twilight’s part. She never worried about the guards; royal guards could never reach such an honored position by being nosy or careless. Twilight started removing the top few bags and cases, thoes with handles on them at any rate with her teeth. Princess Celestia herself had taught Twilight to not use magic for every little thing that needed doing. It was a sign of laziness and impatience, neither were good qualities to find in a potential future ruler.

Finally Twilight uncovered and opened her largest chest and began to remove layers of neatly packed and organized items. A pile of woolen stockings, scarves, shirts, two parkas and other winter wear came out along with an extra thick blanket, which considering Twilight’s unexpected upgrade in accommodations was unfortunately now rather redundant.  It was in the bottom lefthoof side of the chest where Twilight uncovered the source of her nervousness and, well, excitement.

The diapers were not something that could be picked up in any corner store, oh, you could get such things in such places but the product there was severely lacking in both quality and personality. Not something Twilight considered worth wasting either her time or money on to say nothing of the trouble she would have had to go through to acquire them with nopony else knowing about it. No, that just would not do. It was fortunate for her then that she had connections among the Equestrian population and years ago one of thoes tips on where to get very good diapers, a tip from a pink pony renown for her expert baking skills, had shockingly led in a loop right back into her close circle of friends, to Rarity to be exact. Twilight had to admit though that in hindsight the fact that a pony like Rarity who had her hooves in every form of fashion and outfitting business known to ponykind would at least have heard about ponies with Twilights… interests really shouldn't have come as such a surprise.

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The initial conversation Twilight had had with Rarity was significantly less awkward as it otherwise could have been due to that same pink mare giving Rarity a tipoff that Twilight would be arriving soon and what she was looking for. Rarity had greeted Twilight in her boutique with a look that somehow managed to combine sympathy for the embarrassment she knew Twilight to be facing and something almost sultry, which Twilight imagined Rarity reserved for ponies that came looking for the sort of outfits that a pony does not typically wear in public, assuming they wear anything at all.

Once it was firmly established that both ponies knew what the other knew it was right down to business for Rarity. Despite not being quite closing time Rarity was quick to turn the sign over her door around and draw down the window shades. Just as Twilight was beginning to get comfortable with the situation she found herself in; that of casually discussing what makes for an enjoyable to wear and even use quality diaper with one of her oldest friends, Rarity had brought out a small trunk from the back storeroom and proceeded to open it revealing over two dozen different varieties of disposable diapers she had custom made for various clients over the years. No wonder Rarity’s name had gotten around in certain circles Twilight thought. There probably isn’t a single high society diaper-wearing pony in all of Equestria who hasn’t at least heard of Rarity and her work at this point. Though the diapers were technically disposable in nature Twilight had a hard time with the idea of ‘disposing’ of any of them no matter how well used they might become, they just all looked so lovely.

Twilight couldn’t help but notice that most of the diapers had custom designs printed on the plastic in front. Some of the designs made Twilight blush and brought up certain feelings which unless quickly dispelled would only further the emotional difficulty of the situation. Others seemed to be made to look as cute as possible with little images of fillies or various animals printed on them. Still others had images of particular ponies on the front. Whether that was supposed to be the pony who would be wearing the diaper or more likely in Twilight’s opinion the pony that another pony wanted to have on their diaper was not revealed. Rarity didn't bother taking measurements of Twilight as she had gotten thoes on file nearly the day the two of them had met but she did immediately start pulling out a selection of the diapers she thought would have the best size matches and characteristics.

It soon became apparent to Twilight that the next step would be to start trying on some of these selected diapers if her past experience with choosing any type of garment from the Carousel Boutique was much of a guide. Despite this it still came as a bit of a shock when Rarity had asked Twilight quite directly: “So would you like to slip these on yourself or would you like me to do the fitting?” While an admittedly very cute light violet colored diaper hung in the air suspended in Rarity’s magic field. Twilight decided it likely that Rarity had chosen it for the way its color complemented her fur.

And was that an image of the famous Canterlot supermodel Flur-de-lies printed on the front plastic?

“Ah, um, well I guess I should…” Twilight started

“Oh don’t bother yourself dear, here let me do it.” Rarity cut in. “I’m hardly a novice. I still help Sweetie Belle with her diapers from time to time after all.”

“Wait, Sweetie Belle wears-“

“Yes, at night, to bed. Though to be honest I don't think she is really wetting the bed anymore. I’m becoming suspicious she simply enjoys them...”  Said Rarity looking off to the side at nothing. Twilight couldn’t help noticing that Rarity was smiling faintly as she said this.

“Ah, Goodness me I do apologize, here I am going on about my sister and ignoring the client right in front of me! How unprofessional! Here, lets get you up on a standing bar, it will make things easier for both of us”

Twilight was ushered through to one of the smaller back rooms where an upside down T-shaped metal bar was attached to the celling. It was a standard feature found in nearly any professional fitting room and allowed a pony to stand on only their back legs for extended periods with their forelegs hooked over the bar. This allowed the pony doing the fitting better access to the client’s chest and hip area, which would normally be difficult to work on while fitting a dress for example.  It would appear Twilight noted that the device could also be used to properly fit a diaper, not something she had considered before. Of course leave it to Rarity to turn what was a swift and often unpleasant chore with a foal into a work of care and diligence in Twilight’s case.

Her face heating up under her fur from embarrassment Twilight stood on her back legs which she spread apart and raised her tail. Not exactly the same set of movements a pony would make for a simple dress fitting Twilight considered. Really more like a mare preparing to have…no… no, best not think on that too much! Twilight did the best she could under the circumstances to not let her body’s instinctive reaction to her present posture become obvious.

Despite her efforts she couldn’t prevent a slight “mmmm…” from escaping, as the thick soft diaper was pulled tight between her back legs and around her hips partially covering her cutie mark. More strange still was the sensation of another pony’s telekinesis having a hold on her tail and keeping it in the proper position while it was being pulled through the tail hole in back. As Rarity’s magic pulled the tapes tight across her waist Twilight was again reminded how wonderful it was to be wearing a comfy diaper and now being able to do so around a good friend made her all the more pleasantly aware of her state of dress so to speak.

“Oh, my, Twilight.” Rarity said with honest excitement. “Thoes really do look wonderful on you, and you look wonderful in them. I’m so grateful you came to me for help with this matter; I can’t bear the thought of a beautiful mare not to mention princess such as yourself making do with anything less than the best.”

Twilight did have to admit that these were perhaps the best diapers she had ever worn, even better than the admittedly quite nice ones princess Cadance had secretly supplied her with during her days as a filly in Canterlot and Celestia’s personal student. With her years of experience Twilight could tell many things at a glance. The four tapes on the front obviously were well secured and would stay that way indefinitely. They were even colored to match the rest of the diaper.  The outer covering of the diaper was of a thicker plastic than what would be found on an average brand meaning it wouldn’t tear or deform if the tapes were readjusted or reapplied, a problem she had encountered before to her annoyance.

Furthermore the padding was not only thick but dense as well meaning it was packed in solidly. A very important indication of quality that meant the padding would not break apart and or clump together even after being used for an extended period. This would help the diaper keep its shape and prevent leaks. Twilight was also very pleased to see that the padding covered more than just her backside but extended around her waist in the side panels as well which not only improved the visual appearance of the diaper but also meant that a pony could use the diaper while laying on their side without fear of leaks, again a common issue with cheaper mass produced brands.

Though it wasn’t just the build quality that impressed Twilight there were several minor but obviously custom designed touches, which would never be found in a commercial brand. For instance there was a cute little purple decorative looping line printed along the leg guards and another print of small pink hearts along the top of the waistband. Not to mention the still obvious image of Flur the supermodel adorning the front.

“Well Twilight, what do you think? “I do hope you like it!”  Asked Rarity hopefully.

“I, I love them. Um, Thank you…these, um…" Twilight was having a hard time knowing quite what to say as embarrassment began to reassert itself.

“Here darling, have a walk around a bit.” Suggested Rarity pointing back out into the main central room of the boutique in an attempt to distract Twilight enough so that she wouldn’t feel as uncomfortable about the situation.

Seeing as how this suggestion only served to make Twilight more self conscious Rarity decided to take slightly more drastic measures.

“I’m sorry Twilight of course this is embarrassing for you. Here, would it make you feel better if I wore a diaper myself?” Inquired Rarity with a touch of hopefulness intruding into her voice.

“Wha- but you don’t… what I mean is you don’t have to, just for me. Unless of course you, well, want too…”

Oh, Twilight dear”, Rarity said laughing.  “You don’t think that I would be able to not wear these at least a few times after spending the last few years making them for other ponies do you? Besides it would be unprofessional of me to sell any sort of clothing that I make without using myself as a test subject first you see.”

“I- yes, that makes sense. It’s just that, well from you its…”

“It’s strange that such an otherwise fashionable, prim and proper pony such as myself would ever think of wearing a garment meant for ‘doing ones business’ in?” Rarity asked with a smile.

“Of course I understand Twilight, but you should be used to the idea that ponies aren't as simple as they might at first appear and even after knowing one for years they may yet surprise you! After all even I can’t be perfect all the time.”

“I’m sorry Rarity, I didn't-”

“Oh, bah! You don’t have to apologize to me! Here, if you want to make me happy go on out there and show me how a confident - not at all embarrassed – Princess of Equestria makes that diaper look.”

Twilight couldn’t help noticing how in the time it had taken Rarity to restore Twilights confidence she had not only picked out but also put on a diaper. Not something that could be done so quickly by a pony inexperienced with the process, making Twilight wonder just how many diapers worn constituted “a few times” in Rarity’s case.

As Twilight, confidence at least partially restored, turned to lead the way out of the fitting room she couldn’t help but notice the diaper Rarity had chosen for herself. It was every bit as well made as the one she now wore but the details were all different. For one thing the plastic was a pure white except for a pair of dark purple wavy lines parallel to each other running from near the top of the front of the diaper and disappearing back between Rarity’s legs, fancy wetness indicators? Twilight thought, how very…Rarity, if so. And what appeared to be a thin silver chain was tied loosely around the waist of the diaper. It was almost as if Rarity had designed a diaper for herself.

Twilight was hardly the type of pony to stride down a runway at a fashion show; she simply lacked the grace for that sort of thing.  But for Rarity’s sake she tried her best to walk proudly even if she didn’t exactly feel it inside and showed herself off in as many angles as she could think of without making a fool of herself, or so she hoped at least.

However despite her initial reservations Twilight did enjoy herself. Really, how could she not when wearing a diaper as nice as this one. It hugged her lower waist very securely but not so tight as to be uncomfortable.  The thicker plastic had no sharp corners that would dig into her fur and become itchy.  And the diaper’s thick bulk between her legs was more than enough to press against her inner thighs so that with every step she took thoes areas rubbed over the smooth outer plastic making each stride give her a bit of a thrill. Though at the same time the diaper never seemed excessively bulky or out of proportion to her body. There was one oddity though.

“Ah, Rarity I’ve been meaning to ask” Twilight said turning to face Rarity who was still standing watching Twilight and her diaper with an appraising but also quite pleased look.

“It feels as though the plastic covering runs around to the inside of the diaper as well. It doesn’t reach all the way down to, um, down to that specific area and I can feel the plastic covering the inside of the back of the diaper as well again.  Um, why…”

“Yes, that” Rarity said in a way that told Twilight she was hunting for some way to explain it all that would make good sense.

“The mare that ordered the set of diapers the one you are currently wearing came from was very…experienced with diapers and knew exactly what she wanted. She said that having as much of the inside of the diaper be covered in the same plastic as the exterior as could be achieved without interfering with its absorbency helps the diaper to maintain its proper shape over longer periods of time.  She also explained that it keeps more of the chest fur nearer the navel from coming into contact with any wetness when the diaper is used and makes clean up afterward an easier process. Furthermore she simply though they felt better that way as the inner plastic allows the fur to slide around more easily when walking or even running.”

“Well that was a more complete explanation than I expected Rarity, that mare sure sound like an Expert! I would love to meet her some day.”

“Oh you probably have already Twilight, but I’m sure you will get another chance at some point.” Rarity replied somewhat mischievously.

“I’m surprised how well thoes diapers happen to work on you, I mean, I made the best selection I could but even I didn’t expect… Well this does make things much easier! We can immediately begin with what you are wearing as the template and get to work right away! I promise you Twilight that when we are done you will have a set of the best diapers anypony could possibly wish for!” Rarity exclaimed. Why, diapers for a princess, I never would have thought…” Rarity trailed off growing oddly wistful.

Twilight could see she was in for a longer stay at the boutique than she had initially planed on. After all when Rarity said she would start right away on something that is precisely what she did. And that was the problem at the moment because Twilight was beginning to need to use the bathroom quite badly. In fact she had begun to feel it before coming to the boutique in the first place but in her desire to hasten her arrival she had ignored the feeling and perhaps it was true that subconsciously knowing she was going somewhere that perhaps had diapers on hoof that she might be able to use... well, she had not directly considered the possibility and when the diapers turned out to be so fancy and well made she had dismissed it entirely. Seeing as how the possibility of returning home in a timely manner before she lost control was now beyond possible –short of teleportation which was a risky undertaking without being able to directly see one’s exact destination – she concluded that the only choice would be to ask Rarity to go upstairs and use the bathroom here in the boutique. Turning to Rarity Twilight couldn’t help but feel a bit sheepish but asked anyway.

“Rarity, I want to get started on the new diapers as quickly as possible as well but first I need to use the restroom, um, I guess you can put the diaper on me again when I come back down, sorry to make extra work for you though.”

Twilight paused at Rarity’s confused look. “What is it?” Asked Twilight.

“I don’t understand Twilight, you are wearing a diaper at the moment after all, is there something wrong with it?”

“Wrong with it? Of course not, I just, wait, Rarity! Twilight started with a bit of a shock as she understood Rarity's implication, “This diaper is so beautiful and unique. Besides its not even really mine is it. I can’t well, just... go in it right?”

“Oh Twilight darling,” Rarity said expression softening into a warm smile, that diaper was yours the moment I put it on you.  And as for it being unique, pah! That one is simply one of hundreds I had made for the customer, probably thousands by now actually, she still orders more each month. I just keep a hoof full around as samples or for design inspiration if I need it. Don’t you worry there are more where that came from and anyway the ones I will make for you will be every bit a good if not better!”

“After all Twilight, really, what is the point of a diaper if its not used for its intended purpose? So you see,” Rarity said walking over and pressing a hoof gently into the side of Twilights diaper, “there is no reason for you to go and use a another bathroom when you are already wearing one.”

“I- really, its ok? Thousands you said?”

“Yes Twilight, thousands” Rarity said with a comforting smile. “And if it helps I’ll use my diaper if you go in yours.” Said Rarity with surprising eagerness.

Again Twilight was a bit at a loss for words, Rarity? Using a diaper? What was the world coming to?

Twilight gave Rarity a semi-suspicious look. “You’re not a changeling are you?”

“Oh for Celestia’s sake Twilight! If you need to go then just go, you don't need my permission, Princess. Rarity said putting special emphases on Twilight’s title.

“And Twilight, I do have one rule, if you are going to use one of the diapers I made I insist that you enjoy it as much as possible!”

“Heh, thanks, I’ll keep that in mind” Twilight said laughing nervously.

“Where- I guess here, right? Here is good?”

“Where ever you like darling, its your choice. Though I do hope you don’t mind if I watch, do you?” Inquired Rarity hopefully.

“Oh, um no, of course not, you’re always welcome to watch, I mean its your place I can’t just send you off or something hehe.”

Part of Twilight really couldn’t believe she was about to actually go through with this. After all as recently as last week she had had no idea that her friend whom she had known since the day she had moved to Ponyville even knew that a grown mare could enjoy diapers let alone wear them herself. However, she considered perhaps it was only a matter of time before ponies with similar interests wound up getting to know each other.  The other part of Twilight was really only concerned with one thing, the act of relieving herself of a certain uncomfortable pressure. And it was this part that won out over her weakening desire to find any way to delay the inevitable. There was no way out of it now. Anything less than a complete soaking would be rude to Rarity and Twilight was not that kind of pony.

With a quiet intake of breath that sealed her commitment Twilight turned so that her backside was facing Rarity and raised her tail somewhat to provide her with a less obstructed view. She shuffled a bit out of nervousness and spread her back legs slightly. Then with a nearly inaudible sigh she let her muscles release their bind around her urethra.

The results were not as immediate as Twilight was accustomed to considering the pressure she felt but as she forced her body to get used to the idea that yes, she really did intend to go here and now her natural processes took over and the trickle became a torrent which she no longer had any desire to stop.

At first the force of her urine entering the diaper caused it to splash back onto her sensitive places, covering her lower lips and more in a wonderfully warm liquid. Beyond that though it soaked into her fur making her sensitive skin come alive with spreading warmth that just couldn’t be achieved in any other way except perhaps a soak in a hot spring bath. Her strong stream continued its playful splashing into her diaper with an audible and distinct hissing sound as Twilight could feel the increasingly soaked padding pressing more firmly against the inside of her legs as it expanded quickly to accommodate the sudden influx of fluid. The warmth of the thick, tight diaper pressing itself against her from all directions was nearly more than she could take without rubbing herself like a mare in heat. She still was able to maintain enough dignity to keep from doing that, for the moment at least.

It felt like she had been peeing forever. Truthfully, probably only a minute or two but time seemed to slow down as the flow just kept on coming and the diaper gradually expanded and grew noticeably heavier. It didn’t require much though for the once dry diaper to take on the distinctive feel of a well used one to Twilight. The amount of pee flowing out of her would have made for at least two good diaper wettings under normal circumstances so she was thankful for all the excess since the diaper she was taped into had more capacity than what she had worn in the past. Somehow she felt it would have been a terrible waste to have only gone a little or even a moderate amount in this diaper. A diaper of this quality should be used to its maximum potential and nothing less.

By the time her powerful flow finally trickled to a stop she had all but forgotten she where she was and that she had an audience of any sort. Her head was bowed low as she had let every muscle in her body relax save for thoes one currently holding her upright. Incidentally this allowed her to look under herself and examine the diaper. Due to the thick violet tinted plastic covering, not to mention the large print on the front of the diaper it was hard to tell she had wet at all just by looking at the color, perhaps it was a bit darker than before but the more obvious indication of a heavily used diaper was the way the front of the diaper bulged out even further than it had while dry. Twilight was pleased though unsurprised to see no signs of leakage anywhere, the diaper was doing its job well, it was holding in more pee than any standard diaper could be expected to without at least a little leaking. Though what did surprise Twilight was that the diaper was doing all this with out any apparent sagging at all. Despite the noticeably increased weight of the soaked padding the diaper was taped just as tightly and securely around her body as it had been since the moment Rarity had put it on her. And soaked it was, she could feel the warmth all the way from where the front of the diaper ended just below her navel to up underneath the base of her tail.

Twilight found she couldn’t resist curling a foreleg underneath herself to slide the tip of her hoof gently over the smooth plastic while pressing in slightly here and there to test the consistency of the padding. Although the wet thickness of the diaper prevented her touch from being directly transmitted through to her now rather sensitive crotch just the feeling of gliding her hoof gently up and down the front of her diaper was enough to get a quiet moan out of her.

It was however at this point that Twilight noticed that not only had Rarity moved herself closer, but also that Rarity was apparently doing the same thing to the front of her diaper as what Twilight had been getting up to. Twilight quickly lowered her hoof - although she tried to make it look like she wasn’t trying to do so too quickly- feeling her cheeks grow hot.

“Oh my, Twilight.” Rarity said breaking her eyes away from Twilight’s bulging diaper.

“I do believe that just may have been the most beautiful thing I have ever seen you or any pony do!” I’m so honored to get to make diapers for a mare who can appreciate them so much, really I am!”

“That's so sweet of you Rarity, thank you.” Said Twilight turning to nuzzle her friend.”

Despite being momentarily distracted by Rarity’s emotional outpouring Twilight couldn’t help remember a certain promise from the white mare.

“Well, since I’ve used mine that means that you will- I mean you said that you’d-“ Twilight said struggling with the proper way to broach the subject.

“Well yes, about that hehe, I think I may have um, done my business, already, just now, while watching you, so to speak.” Rarity got out awkwardly.  “I must admit it does feel really quite nice.”

Rarity turned around showing her that her once pristine white diaper was now noticeably darker with a slight yellowish cast to it that covered most of her backside and well up the front Twilight was sure. Rarity must have been telling the truth about how it felt as when she pressed a hoof tip into the center of her diaper Twilight could see her body visibly shiver. Twilight wasn’t sure why but the sight of such an otherwise well kept pony wearing a rather fancy diaper, silver waist chain and all so thoroughly enjoying a very obvious wetting in her diaper was all rather exciting. Her actions were just so wonderfully juxtaposed with her appearance and public reputation.

“Oh my, it has been too long since last I did this. Thank you Twilight for coming over today, I wouldn’t have been able to be having nearly as wondrous a time without you!”

Before Twilight could respond Rarity went on.

“Silly me, this is about you dear, here now, walk around a bit, do some stretches, just move about like that diaper is the most normal thing in the world. I want to be sure that the diaper is perfectly comfortable for you no matter what you do while wearing it. Nothing less is acceptable.”

“Um, ok” Twilight said trying to decide just what constituted a bit of a walk. She settled on simply striding around the room while trying to walk as normally as possible. This proved a bit difficult, not due to any true physical limitations the thick wet diaper imposed but simply because of the novelty of the sensations its heavy warm padding and the tight smooth cool plastic produced as they stretched and slid around her legs and the very receptive areas to be found under her tail.  Altogether it really was enough to drive a pony to distraction.

Chapter 3: Awakenings

Chapter 2: The Place Where Things Got Messy

Rarity continued to gaze intently at Twilight as the young Alicorn strode about her shop alternatively stretching this leg or that and at intervals raising her front half by putting her fore hooves up on a countertop or table. The more she watched Twilight the more enamored with her good friend’s amazing diapered figure in action she became. It was as though the young princess had been born for diapers. Of course all foals started out life in them but only a select few could keep on growing into adults all the while being able to look every bit as cute in them. And here just about the best example she could have hoped for has waltzed right into her place of business!

Eventually the pressure of Rarity’s hoof rubbing up and down over the smooth white plastic and heavily soaked padding between her back legs became strong enough to register to her conscious mind. With a slight sense of regret she lowered her hoof and motioned Twilight over.

"Thank you for that lovely demonstration Twilight! I think I’ve gotten a good enough idea of where to start.” Come, come, Rarity motioned for Twilight to follow her into a different back room separate from the fitting room.

“As I believe I mentioned before the diapers you have on now are a wonderful place to start. If we are lucky all that will be required is to reuse the basic pattern but with your exact measurements and a new color/design scheme and I should be able to start producing the first examples for you to try on! This is so exciting Twilight! Why, perhaps I might even be able to begin producing a ‘Princess’ line of diapers for select customers and- ahem, well, with your permission of course Twilight”, ended Rarity a bit sheepish from her over enthusiasm.

“No, that does sounds like fun, but one thing at a time. I’m still getting used to the idea that you know I like diapers, I’m not sure how I’d feel about too many more ponies figuring out the same thing quite yet.”

“Yes, of course Twilight, my customer’s privacy is of the utmost importance! I wouldn’t still be in business today if I couldn’t maintain confidentiality.”

“Here we go Twilight.” Rarity said when they got to Rarity’s work desk, which was covered in various types of fabric and patterns in various states of assembly towards their ultimate destination as parts of dresses and other outfits. There were also a number of catalogues and notebooks full of sketches of Rarity’s own design piled here and there. However the catalogue that Rarity pulled out from a small draw near the bottom of a nearby desk was not associated with any of the obvious categories of publications. It was also not as large and possessing of a flashy front cover as many. In fact it had no cover image at all, simply a small black lettered title of ‘Absorbent Undergarments’ was printed on a light blue background.

“This little book here is of my own publication I’m proud to say, and has a certain circulation among certain ponies of similar interests across Equestria.”

Twilight stared at it eagerly as Rarity placed it in front of the Alicorn and opened it to the first page of listed items. The book was essentially a diaper catalogue but calling it that alone would be an injustice. There were dozens of carefully drawn overall similar yet slightly different diaper outline patterns to choose from but each one had a carefully compiled list of dozens of suggested additions and modifications to the point where thousands of possibilities could be dreamed up through mixing and matching. Some of the concepts included diapers that could be made with the wearer’s cutie mark printed on the side. A pony could have any image they wanted printed anywhere they wanted really. There were options for custom decorative accessories one of which was the very silver chain around the waste of the diaper she was currently in. You could get a diaper that had the plastic around the waste cut to form belt loops and of course there was a listing of moisture proof plastic belts that could be ordered. It was possible to order a diaper that only had a standard plastic covering on the outside or the plastic could come partially around into the inside of the diaper such as the on the one Twilight was currently in. There was even an option for a diaper that was completely covered in plastic inside and outside, though the practicality of that was questionable. Regardless, the lists went on. Rarity was quite proud of her work in this booklet She had had great fun putting it together.

“Wow Rarity! This is amazing! Gushed Twilight. I had no idea there were so many options! Who makes this book and where can I get my own?”

“Oh its just one of thoes compilations sourced from various places…” Said Rarity skirting around the issue. “I am certain I should be able to get my hooves on another copy soon and I will be sure to immediately bring it to you.”

Rarity wasn’t quite ready to explain to Twilight that she was so heavily involved in the production of boutique diapers distributed across the country.

“Thank you! I’d love that if you could do it.” Twilight said turning back to the catalogue.

As Twilight re-immersed herself in the contents of the listings mumbling mental notes to herself as she read, she made a slight fidgeting motion and lowered her tail slightly. These motions would have passed by unnoticed to the average pony but to Rarity’s eye, trained on years of dealing with Sweetie Belle in diapers they spoke quite clearly about what Twilight must be feeling.

Twilight must be needing to use the bathroom again and this time not just to wet! Thought Rarity. As it happened Rarity had been dealing with a growing pressure in her backside for some time now but had been resisting the temptation as she wanted to wait for the most opportune moment. It appeared that such a moment had arrived. Rarity wanted to make Twilight feel as comfortable and free to do as she wished in her diapers around her and Rarity had decided that the best way to do so would be to lead by example.

“Here Twilight, I don't want you to feel rushed.” Rarity said dragging over a chair with her magic. “Have a seat and take your time. I need to organize a few things in the fitting room before opening tomorrow. I’ll be back in a few minutes to check on you.”

“Ok, thanks Rarity.” Twilight said distractedly while settling herself onto the provided chair, diaper giving off a faint crinkling sound as Twilight’s weight settled down onto it.

Rarity Smiled at the violet alicorn, give that mare a book and she’ll forget the rest if the world exists. It really was an endearing trait.

Now, thought Rarity, to go through with my plan. Rarity left Twilight in deep thought over her new wealth of options and hurried back across the showroom to the fitting room where they had started. Rarity closed and locked the door upon entering despite the fact that she felt she might well not hear from Twilight for over an hour if left alone. However Rarity was simply a cautious mare and didn't want to worry about the chance of interruptions that would upset the delicate timing of her plans.

First though Rarity couldn’t help but go over to the nearest mirror leaning against the far wall and admire herself in the diaper a bit. She was pleased to see that despite being well used and moved about in for a little while there was absolutely no sign of the padding coming apart or of the diaper becoming looser in any way.  She really did love how she looked with the extra thick slightly discolored bulk of the wet diaper being put on display so proudly. Her waist chain glinted softly in the light from the single ceiling bulb, as it was dark outside now with the Sun having set an hour ago. It had been a strange series of fortuitous events that had led her down the path towards loving diapers but she couldn’t be happier that it had turned out in the way it did.  It added a great spark of excitement in her professional life that she felt she would probably be lacking otherwise.

The period of self admiration had to come to an end though, Rarity wasn’t sure how much time she had to waste and the sooner she could get back to Twilight the better. Well, Rarity, she thought to herself I don't think there will be much going back for you if you do this but we’re in so deep already…might as well. And anyway if nothing else it will at least feel good.

So with a deep breath of commitment she relaxed her muscles and did what nopony with even passing knowledge of Rarity would think she would ever do. Rarity began to mess her already soaked diaper.

Due to having held it in for so long it all rather came out in a rush. Rarity was quite glad of this really, she hated having to strain or push. Such behavior was so un-lady like after all. Rarity moaned quietly as the unusually large quantity of slick squishy poop spread out over her private regions and up below her tail. The thickness and tightness prevented the diaper from obviously bulging out the way a cheap diaper would have under the same circumstances.

It was all over in a matter of seconds but it didn't take long to make a huge change in how the diaper felt. Now a thick spreading pile of hot messy poop overshadowed the warm wetness caressing her between the legs and around her back and hips. Its presence seemed to distract from all her other feelings.

As good as it felt however there was one simple option available that could make it much better. Rarity picked out a spot on the floor covered by a soft rubber mat normally used to protect the finish from stools and mannequins and the like being dragged about. Rarity stepped over to her chosen location and gently lowered herself down directly onto the seat of her diaper. The feeling of the hot mass of poop immediately spreading in all directions within her diaper was simply divine. The majority of it went all over the back of the diaper though the base of her tail limited this upward migration. A good amount though quickly squished its way forward coating her privates in its slick warm embrace. Rarity couldn’t resist squealing just a bit at this wonderful sensation. Immediately she pressed a hoof into the center of her diaper squishing the mess in even more thoroughly. Rarity could never quite get over her surprise that something so disgusting could feel so wonderful at the same time. A bit more quick rocking around on her backside making sure the sticky mass was coating as much of her rear and crotch as she could manage in a limited amount of time finished up her clandestine fitting room activities. It was now time to return to Twilight and hope and pray that her timing and ability to read a pony’s emotions were still accurate.

Rarity’s walk back to where Twilight was still engrossed in her newfound book of options was short but wonderful. With each step she took the goopy mess coating her from tail dock to halfway between her privates and navel alternately pulled away from or squished into her normally immaculately cared for soft white fur. The sensations constantly changing depending on how her stride stretched the plastic of her diaper. One of the best things about being in a very high quality diaper was that as filthy as she was the same well designed leak guards and general tightness of the fastening tapes nearly entirely prevented any smell from getting out. Of course no diaper can be perfect in such regards and if she stood in place for long enough she would surely begin to smell herself. As long as she moved around now and again however things should be fine. Anyway if all went to plan she wouldn’t have to hide her deed for long.

Upon entering the workroom Rarity was immediately encouraged to see Twilight squirming around a bit on her seat though she persisted in looking through the listing of available diapers and associated options.

“So!” Rarity called from near the doorway. “What have you come up with?”

This time Twilight did look up from her research.

“Oh, I think I’ve settled on some options but I want your opinion on some others.”

“Really?” Rarity said walking over closer to Twilight. “What are you interested in?”

“I’d really love to go over these with you but um…” Twilight trailed off

“But what?” Rarity asked, although she was already sure of the answer.

“Well, I need to use the bathroom again-“ Twilight started.

“Twilight dear, I thought we already had this discussion, you are welcome to use your diaper whenever and wherever you want to.”

“I know, but this time I uh, I have to do more than just pee.” Twilight said her ears folding back in embarrassment.

Bingo! Though Rarity.

“Twilight, Twilight… just how strict of a mare do you think I am?”

Rarity now walked all the way around the chair to stand in front of Twilight. Without saying a word Rarity turned so her left side was facing Twilight whereupon she lifted her back left leg in such a way that Twilight should be easily able to see the brown stain that ought to be visible behind the leak guard. Twilight’s initial expression of confusion lingered long enough that Rarity nearly gave up and told Twilight outright but just before the moment got awkward enough for such direct measures Twilights expression changed to one of surprise and even perhaps a bit of shock.

“Rarity! You- you’re messy! Twilight exclaimed.

Satisfied with Twilight’s reaction Rarity lowered her leg and turned around to walk to where Twilight was sitting where she proceeded to plop herself down nearly on top of Twilight in the same chair. They were so close now that their sides were touching.

“Yes, Twilight I am. Very messy in fact.” Rarity said in a comforting voice.

“Its what diapers are for after all, and I see no reason why you should have to resist your body’s urges when I don’t.”

“But Rarity I-“ Twilight started looking first at Rarity’s swollen diaper and then up at her face.

“I don’t understand, this isn’t like you Rarity”

“Twilight.” Rarity said in a soothing tone despite feeling rather nervous on the inside.

“I am behaving more in line with my personality than you seem to think. I’m not the only pony in Equestria who for business or personal reasons puts on an air of propriety and respectability while out in public, but who, when by themselves in private or with close friends, such as yourself, let their mane down so to speak in a major way. It can be hard trying to look and act perfect all the time and so when ponies like myself find a way to unwind we usually do so in a rather spectacular manner. I only perhaps wish you could have known about this side of me sooner so it would note come as quite a surprise.”

“And besides,” Rarity said lightening up. “You are an Alicorn Princess of Equestria! Perhaps not yet possessing of the regal bearing a thousand years of steady rule brings but don't you think the average pony would be just as shocked if not more so to learn that you of all ponies liked to wear and use diapers as you do?"

“Well I- when you put it that way… I’m sorry Rarity I guess I never took the time to really learn what it must be like to be in your position, I know I sure get tired of all the Canterlot aristocracy thinking I need to act a certain way. It must be just as bad for you, your business success rides on your image after all.”

“I’m sorry I reacted the way I did, it’s just all a bit much to learn in one night. Perceptions are not easily changed I guess."

“No need to apologize dear, I suppose I’m somewhat to blame, after all I didn't exactly give you much warning about revealing my inner secrets did I!” Rarity laughed.

Rarity could see that Twilight was coming back to her usual happy self but with that came a return of a certain feeling which Rarity could surmise by the way Twilight glanced down at her pee swollen diaper and back up at Rarity.

“Um, so its really alright if I uh, go?” Twilight asked.

For a response Rarity leaned back in the chair and spread her legs exposing the slowly growing brown stains around the leg openings of her diaper. She then gave Twilight a pointed look as if to say ‘If I’m willing to do this myself do you really think I would be bothered if you did it?’

“Right then, Twilight said standing up. The Alicorn didn’t bother really going anywhere she simply stood there in place, spread her legs, hiked up her tail up, and with an audible exhale let her inhibitions and anal muscle control go.

The results were immediate and impressive, Twilights diaper slightly but rapidly expanded in back in much the same way that Rarity’s had only a bit more so. Rarity was transfixed by the sight of the heavily breathing Alicorn thoroughly mess her beautiful diapers. Flur would be so pleased to know a princess was enjoying the same diapers I made for her Rarity thought.

As Twilight brought a hoof around back to prod at the even more expanded rear of her diaper Rarity found herself sliding around in her mess by moving her butt about in small circles. A process guaranteed to coat almost any part of her under the diaper not yet already slathered in slick brown poop. As Rarity saw twilight looking at her she smiled at the other pony.

“Well, Twilight aren't you going to sit back down, I’m sure you would like to, why don't you try right there on the floor where you’re standing.” Rarity couldn’t quite manage to suppress a slight grin as she said these words. There was no way by now that even a pony like Twilight who was sometimes slow to grasp the details of social situations could not believe that Rarity didn't know exactly what Twilight wanted to do in her diapers and why.

With a hesitant grin of her own Twilight carefully lowered herself closer to the floor until with a sigh of pleasure Twilight came down on the huge mass in her diaper with her full weight. Rarity, a pony experienced in noting the finer details in things didn't fail to notice how Twilight had come down on the seat of her diaper while leaning quite a ways back. Doing so was a guaranteed way of making sure that most of the mess would be forced between her legs and right over her marehood as she sat up straight. Rarity wouldn’t be surprised if Twilight wound up with as much or more of her mess in the front of her diaper as in the back area below her tail.

This thought combined with her own slick mess coating about everything under her diaper and her constant motion nearly sent her over the edge right then and there. Fortunately she managed to calm herself down before things got really out of hoof and she made a fool of herself.

After an extended period of rocking back and forth in her beautifully designed and now thoroughly used diapers Twilight stood back up on all fours with a slight grunt and a rather silly smile on her face which spoke of a pony who had finally been able to do what she had secretly hoped for but never seriously considered would happen.  Rarity couldn’t help but watch the front of Twilights diaper and try to determine for herself just how much poop was contained there. She knew Twilight’s mess must be coating just about every square inch of soft fur to be found under the diaper after all the rolling around Twilight had done in it but she wished she could determine specifics.

“Well Twilight, you certainty must be satisfied after that performance! Come, sit next to me and show me what you’ve decided on for your own diaper set.” Rarity considered herself fortunate to have had the foresight to have brought over a chair that had plastic-based cushions just in case.

“Oh of course, that.” Twilight said sheepishly.

Twilight came over and with an admirable lack of hesitation sat herself right down next to Rarity. The chair, while wide, was not necessarily designed for two ponies at once so Rarity found herself right up next to Twilight, shoulder fur brushing and diapered hips rubbing together. Rarity floated the design book over from where it had been temporarily forgotten on an end table and opened it up to the first page.

“And so? What were you thinking? Asked Rarity.

“I, I was thinking you know, what are diapers all about? They’re about comfort right, not just the way that they feel when tight around your back side and hips like they are hugging you but also the comfort of knowing that you can just go in them when you need to and you don't have to bother having to go to or find a bathroom. Its like they are your friends who are always there for you when you need them. And so I thought about who represented comfort to me the most when I was a filly. Well aside from my parents of course.”

“Hmm, let me guess” put in Rarity. “Princess Celestia, perhaps”

“R-right, that's- yes, Celestia was always there whenever I needed- well anything really, but especially in my studies. She was of course my teacher first, but more than that if I wanted extra practice on a spell or needed a study partner or I wanted something from the rare books archive she was always there for me. Plus on more than a few occasions she would let me use her private sitting room to study in. I loved it in there; it was so peaceful with a fire going on cold winter nights. And sometimes Celestia would come over and lay down next to me and we would, um, cuddle together.

“Anyway,” Twilight hurried on before Rarity could interject any questions hunting for juicy details about Twilights life as a filly in the Canterlot palace itself. “I just thought it would be somehow… fitting to wear a diaper designed with Princess Celestia in mind… That's not too weird right? You don’t think Celestia would be mad do you Rarity? Twilight asked with concern in her voice.

“Haha, oh Twilight, what you said is so touching, no I don’t think its weird and more than that I think Celestia would be honored and a bit amused that you thought so fondly of her that you would want to wear things based on her.” Rarity said putting a foreleg around Twilight’s waist and pressing her hoof into the side of Twilight diaper. She didn’t bother to remove her leg after the initial squeeze though.

“Why amused?” Twilight asked.

“Ah never mind I said that.” Rarity said quickly. “Just know that I’m positive there’s nothing wrong with what you want. So what specific qualities do you want the diaper to have?”

“Right, well, I was thinking that the diaper should mostly be white or perhaps a very pale pink like Celestia’s coat and maybe some gold trim, though not too much, around the top and leak guards.

“What a splendid idea.” Said Rarity beginning to rub her hoof around in circles along the smooth plastic of Twilight’s diapered hip right near where the Alicorn’s cutie mark poked out from under the diaper.

“Oh, and I thought it would be nice if the diaper tapes were colored based on Celestia’s mane, like the bottom two would be green and the top two would be blue or something like that” And also perhaps a colored line sketch of Celestia on the front, nothing too, um, over the top, but something subtle and elegant!”

“Twilight dear! That sounds simply gorgeous, I can’t wait to get working on it! Rarity’s hoof was now rubbing up and down the back of Twilight’s diaper and making circles around the base of her tail.

“Was there anything else you wanted to add?” Asked Rarity.

“I, uh, do like the interior plastic lining on the ones I’m wearing now, it makes it more slick, I guess is the right word, its easier to slide around in when um-“

“When your messy.” Rarity finished for Twilight.

“Yes, then” added Twilight. Now moving herself around a bit more in her diapers. Rarity took this opportunity to move her leg back around to her side of Twilight and began rubbing down along Twilight’s diaper between it and the inside of her leg.

“And just make sure the padding is packed in as well as it is in this diaper, that's probably the most important thing. Um, in the end”

“Of course, of course, oh, I’m sorry dear, was I distracting you, should I stop? Rarity asked her hoof now gliding up and down the front of Twilight’s bulging poopy diaper.

“Ah, no… no its, its fine” Twilight said spreading her legs open just a bit wider allowing Rarity’s hoof more freedom.

Having gotten verbal permission Rarity began to press her hoof deeper into the soaked padding overlying a deep layer of squishy poop coating everything between Twilight’s legs.  The sensation of having another pony’s hoof press her squishy waste deeper into her marehood made her moan with pleasure.

“Wow Rarity, that feels-“ Twilight was abruptly cutoff as Rarity leaned over and kissed her full on the lips. Rarity could immediately tell from the way that Twilight hesitated and stiffened up slightly that Twilight was afraid that Rarity was interested in more than simply another mutual pleasuring session, which had occurred occasionally in the past though without diapers being a factor. Rarity could understand Twilight’s position. It would be a bit awkward for the Princess of Friendship to suddenly be in a committed relationship with a good friend to the exclusion of all her other friends. And as a general rule in pony society it was frowned on for an Alicorn, however rare they were. (Historically around one in one hundred million or so on average Rarity had read.) To go about getting into serious relationships with ponies that would not live even a twentieth as long (or less). Rarity immediately made it a point to correct this potential misunderstanding before it could disrupt her plans for the evening.

“Don’t worry dear Twilight.” Said Rarity releasing the Alicorn from her kiss.

“It’s not my intention to try and have you as mine, besides I don't think we would really get along that well over time.” I just want to do my best to make you feel like the Princess you are for tonight.” Rarity said while putting on her most disarming smile.

Thankfully Twilight visibly relaxed at this and as a very encouraging sign without a word leaned in and kissed Rarity back. This time neither pony saw reason to immediately break apart. It didn't take long for hooves to find sensitive diapered areas and between the kissing growing more passionate and the rubbing and pressing becoming more forceful the situation became rather heated.

“I would suggest,” panted Rarity finally pulling away from Twilight “that we move to a more comfortable location. I think that we will soon find this chair to be rather… limiting.”

“Yes I agree, um, more space.” Twilight said rising out of her sitting position. At first she looked around a bit confused.

“Where…?”

Rarity pointed a hoof up toward the celling with a look that said ‘where else?’

“Oh right! There!” “There sounds good!”

To Rarity’s surprise Twilight took the lead out to the stairs that led up to the small apartment which took up the second floor of the boutique. Rarity shook her head in amusement as she followed the unpredictable mare up the stairs.

The opportunity to watch Twilight go up two flights of stairs in a well-used diaper was not lost on Rarity. She spent the unfortunately brief trip nearly transfixed watching the shiny violet plastic of the diaper stretch in various exciting ways over the thick bulk of the soaked padding which itself was pulled tightly over a very messy but wonderfully toned muscular butt. Twilight’s butt, an Alicorn’s butt, one of the finest butts in Equestria and not only was it encased by a dirty diaper but it was hers for the night.  Rarity also couldn’t help but pride herself on her efforts in having these diapers created. Even after a complete soaking, a huge messing, and a while spent being squished around in, the diaper had held onto its initial shape almost perfectly. A standard diaper would be noticeably sagging by now and the padding would probably be falling apart. No sign of either was to be found here. Only the slight discoloration and bulging out of the padding hidden under the outer plastic and the faint smell of a well-used diaper reached Rarity as being indicators that Twilight had gone in the thing at all. It really was something to make the fashion oriented pony feel pride for.

At the top of the stairs Twilight paused waiting for Rarity to catch up.

“In here darling.” Rarity said passing by Twilight and pushing open the door to her bedroom. The room itself was not particularly spacious as there was significantly less floor area for the second level than on the first. However Rarity had managed to squeeze in a four-poster canopy bed with purple drapes to match her mane color not to mention a sizable dresser. There was a small side table on the far side of the bed upon which sat a single lamp that provided all the illumination in the room. Between the soft lighting and the plush bed it really was a cozy little space. At least this was the impression she hoped her frequent ‘guests’ had of it.

“It actually has been a little while since I was up here hasn’t it Rarity." Noted Twilight.

“Indeed it has.” Rarity replied, “Though I don't think much has changed. It's a huge pain to move around this heavy furniture after all. Trying to lift that bed gives me a headache.”

“Why, Twilight, am I discussing furniture under these circumstances? You must think me crazy. Here on the bed you go.” As Twilight worked to get up on the bed Rarity pulled the finely made red and white comforter off and neatly folded it over on the dresser. This revealed that the bed mattress was covered in a thick clear plastic protector sheet that was pulled tightly over the sides and corners. It squeaked softly as Twilight moved around on it trying to make herself comfortable.

“Though that,” Rarity said pointing a hoof at the plastic sheet “I believe is a new addition from your perspective. Originally I bought it for Sweetie Belle so that I could put it on the bed when she spent the night here with me but I have since discovered that I find it very convenient for my own proposes. I would never forgive myself if I ever did anything to ruin that mattress!”

“So um, how do you want me to uh…position myself for whatever it is…” Twilight asked awkwardly.

“Twilight you really have no idea how adorable you are when you’re nervous like that do you.” Laughed Rarity climbing up onto the bed herself. “Just lay back, relax, and let me do the work.”

Twilight, her face feeling a bit hot from embarrassment lay back into the soft pillows with her back legs spread out in front of her revealing the fullness of the diaper between thoes legs. The diaper’s outer plastic covering was pulled tight by the urine filled padding underneath presenting a slick smooth surface which reflected the dim light from the room’s only lamp. The printed image of the Canterlot supermodel Flur stood out proudly on the front as if personally endorsing the diaper and its messy contents. Rarity watched Twilight shift around in her diaper a bit more no doubt enjoying how her mess squished and oozed around her butt and between her legs with every little movement.

Well if we’re going to do this might as well start now. Thought Rarity

“So what-“ Started Twilight.

“Shhhh…” whispered Rarity.  “Just enjoy yourself princess, no need for explanations.” As Twilight looked on intently Rarity bent down and kissed the front of her diaper and just for added measure licked it as well. It was worth it as this unexpected action got a giggle out of Twilight. Good thought Rarity that means the poor girl is relaxing, now hopefully we will be able to get somewhere.  Rarity sat up straight again but now she pressed her hoof firmly into the front of the diaper. Not just a rub as before but a hard press. This elicited a sharp intake of breath from Twilight. Not quite a gasp but Rarity would take what she could get.

“Feels wonderful doesn’t it, Twilight” Asked Rarity somewhat rhetorically considering the obvious answer. As she continued her firm presses. The fact that each press left a temporary indentation in the plastic and padding spoke volumes about just how much mess there really was in Twilights Diaper.

At this point though it wasn’t just Twilight’s diaper that Rarity was paying attention to. Though she had never fully stopped being aware of her own soaked and completely filthy diaper now she was suddenly much more aware of it. How its tightness firmly pressed the poop into her fur so she could feel the damp slickness all over her sensitive skin. How every time she moved she could feel the thick goo squish its way up into every fold and crevice of her sensitive marehood. Her clitoris felt like it was on fire buried as it was in a thick coating of Rarity’s beautiful bodily waste.

Rarity tried her best to concentrate on her activities with Twilight, it really wouldn’t do for her to cum now. Though if she were any judge Twilight was closer to the edge than she herself was. The Alicorn was pressing her diapered crotch into Rarity’s hoof harder each time and was beginning to grunt or moan with every thrust of her hips. Twilight was close and Rarity knew just how to give her the satisfaction she disserved. At the same time that Rarity forced her hoof into the front of Twilight’s diaper as hard as she could she leaned forward and wrapped her tongue and lips around Twilight’s horn.

Her reaction was every bit as satisfying as Rarity was hoping for. With a sort of strangled cry Twilight bucked her hips hard into Rarity’s hoof several times while her horn glowed softly and created a tingling sensation in Rarity’s mouth. After a few more weaker pelvic thrusts and a shudder Twilight fell back onto the pillows breathing hard.

“Oh Rarity, that… was wonderful…thank you…” Twilight said between gulps of air. “I guess…I needed that.”

“Don’t think we are through just yet my dear.” Rarity said running a hoof up and down through Twilight’s soft belly fur. “The best is still to come!”