Gluttonous Desires

by Archy

Rating: mature
Tags: Fetish, Rarity, Slice of Life, Twilight Sparkle, My Little Pony: Friendship is Magic
Length: 6612

An invitation from Rarity see's Twilight trying on a new piece of clothing, which will change her in ways she can't begin to imagine.

After borrowing a book from Twilight a little while ago, a letter appears at the castle for Twilight addressed specifically to her. Within it a note from Rarity asks her to come to the Boutique as soon as possible, with little else to go on Twilight heads over there as soon as she can to find out why Rarity wanted to see her so soon.

Little does she know that the new piece of clothing Rarity has created, specifically - from a book Twilight loaned to her - will be changing her in big ways!

By Archeya - Revisions and Suggestions by Cheers - Icon used by permission from Graphene.

Published 2016-08-29 21:50:01 UTC
Last updated 2016-08-29 21:50:01 UTC

Chapter 1 - The Letter

It seemed innocent enough, as Spike came running towards Twilight down the great castle passageway, holding a small, white envelope in his claw. He always got excited when it was to do with Rarity, and the delicate pattern it had clearly showed it was from her. “Open it, open it!” he squeaked with delight as he thrust the envelope into her hooves.

Dear Princess Twilight

At your earliest convenience, please come to Carousel Boutique. I have a new item that I believe you will simply adore, and it is for your eyes only. Under no circumstances must any other Pony (or Dragon, I know Spike will have seen the letter when it was delivered) be aware of your visit. I look forward to seeing you soon.

Your friend.

Rarity.

“Well come on Twilight, what’s it about!?” He said eagerly.

“Oh um, Rarity just wants to meet me about some important Princess business! Shan’t be long! She said it was urgent.”

“That’s it?” Spike frowned. “She couldn’t just, you know, tell you in Pony?”

“Nope, it had to be on record – you know how I am Spike – keep it archived!” Twilight retorted, and started to blush.

“And why are you blushing, is something going on?” Spike enquired further. Twilight was a quick thinker but was starting to run out of excuses rapidly. Before Spike could ask another question her Horn glowed and she was gone, already in Carousel Boutique, standing in front of a Rarity grinning from ear to ear.

“Ah darling, you got my letter! So glad you could come on short notice but there is something I want you to try for me.” Rarity beamed, clearly she was very excited about whatever fashionable item she had lovingly put together, but then again thought Twilight, she always was.

“The first thing I have to tell you.” She said before Twilight could get a word in edgeways. “Is this item is unlike anything I’ve ever created, I found it actually in that book you loaned me about old fashions, and it seemed to simple yet so luxurious I just had to make some! Although when you first see it you may even wonder how you wear it, but don’t worry – Rarity is here to help!”

“Rarity, I’m glad you want me to help you.” Twilight said, exasperated “But why all the secrecy? Why did you send a letter when you could just come and talked to me? Honestly I’m a little confused at this point, is it really that special?” As she asked, Rarity’s horn glowed and she opened a small, purple box in front of them. What came out looked, to Twilight, completely unremarkable – but she had no idea just how much this small piece of cloth was going to change her.

“I found the design towards the back of the book, actually, almost hidden away as if it is taboo. They’re very small and fit around your flank and hind quarters, it’s supposed to – it says – give more allure to Stallions when you’re being intimate. Don’t worry dear, I know you’ve been pining for a Stallion for a while – it must get awfully lonely in that big castle with only Spike to keep you company, as charming as he is.”
Twilights blush from earlier was even bigger now as she stared head long into the tiny piece of fabric in front of her eyes. They looked so small and delicate, and it was probably the first time a piece of clothing had vexed her so. Finally she had to ask.

“I do appreciate the thought Rarity, honestly, it’s very kind of you. But how do I even wear this?”

“Ah, say no more my dear – just hold still. Also just so you know, as I know how inquisitive you are, the book referred to them as ‘panties’. Interesting name I thought.”

As she worked her magic Twilight lifted off the ground slightly, enough to raise her hind quarters so Rarity could slip them on, as they made their way up her legs towards her buttocks Twilight could feel a tightening sensation, they certainly felt very comfortable as they moved their way further up her frame. Finally they came to a rest just below the dock of her tail and around the top of her legs, covering her cutie mark ever so slightly. She hadn’t felt anything like it before, clothing was usually so loose around her body on the rare occasion she wore any, but the tightness of this small garment felt oddly satisfying. Clearly her face and body language were showing her delight, as Rarity squealed in joy.

“Oh I’m so glad you like them darling! I did try to make them as much to your liking as I could get – a lovely deep red so they are not too overpowering against your beautiful natural coat colour, but still visible. When you get a chance to use them let me know how it goes, I’d be interested to know if they are as amazing as the book makes them out to be.”

Twilight grinned and used her own magic to pull the panties back down her hind and place them into the box.

“Well thank you Rarity, this has certainly been an…interesting experience. Mind if I take them back to the castle? I’d like to keep them nearby, just in case.”

“But of course my dear! Naturally I expected you to say nothing else. Although a word of advice while I was watching you try them on. They’re supposed to ‘exaggerate’ your features dear, and well…your features are a little small. I’m not sure they’re going to be achieve their full potential.”

Twilight tilted her head slightly at Rarity’s comment. “What do you mean? ‘not sure they’re going to achieve their full potential’? Is there something else I can do?”

Rarity smiled slightly, in that way she does when she has something to say that is slightly unflattering – but she’s going to come out with it anyway. “Well dear, like I said these are meant to give more of an ‘allure’, and they were pressed quite flat against your flank. Normally I’d never suggest this as you know how much of a fan I am of making elegant clothing that fits ponies almost to a tee, but you might want to…as a suggestion…fill out a little bit? If you we’re ever so slightly…more bulbous in that region I think they would look even more spectacular on you. What do you think?”

She could hardly believe what she was hearing. Rarity telling her to put on weight? This was almost unheard of. “Are you seriously telling me I could stand to GAIN a few pounds?”

“Well dear you do work awfully hard in that castle, I know Spike makes you meals but you have been looking thinner lately – and that is a compliment! But with this garment is works best the other way around, if you are slightly well…thicker then it accentuates how it looks on you. Please I’m really not trying to be insulting but that’s the way it is. Do you see?”

Twilight was almost beet red by this point. Thin? THIN? She was going to show her, she wasn’t just going to put on a few pounds. She was going to put on a bit more than that, and then the next time she saw Rarity she wouldn’t believe just how much she was going to ‘accentuate’ the garment she had given her, oh yes.

“Well thank you for the advice Rarity, but I must be going – the research won’t do itself!”

And with that, Twilights horn glowed once more and she returned herself to the castle. Specifically her bedroom, where she quickly tucked the small box away hidden from Spike. She returned to her research for the rest of the day, she had a plan for them tonight when her faithful companion and most of Ponyville was fast asleep. What she felt just now in the Boutique required further investigation, and heavily investigated it would be.

Chapter 2 - Nightfall

As night fell around Equestria, Twilight retired to her bedroom high atop the castle. She always wondered why the room was so big, not that it mattered. Most of the castle rooms were of a grand size, it certainly kept Spike busy having to clean more than the old library. The huge size tonight would be to her benefit as she was going to need every bit of space the room could offer, and maybe more if what she was hoping for would come to pass.

Twilight trotted over to where she had concealed the panties Rarity had given her earlier, she stared at them again for a few seconds, they wouldn’t remain like this much longer she thought as she slipped them around her flank. Immediately the tightness took hold of her, but they were still nicely snug around her behind. ‘Now imagine.’ She thought to herself. ‘If I was bigger, and these were tighter, I bet the feeling…well, would be incredible compared to what I’m feeling now. And I’ve got to put a little more into my flank, maybe a lot more if I’m going to make her take that comment back.’

There was a spell, she had been looking at earlier in the day which caught her attention. It was an aura spell that supposedly was to be used in the event of injury – it enveloped the part of the body that was injured and soothed it to help with the healing process, very useful indeed. Twilight knew that she could enlarge herself by eating some food, but she was still constrained by the rules of the universe. What if…what if this spell could manipulate her body? She read that the use of it was not recommended, as even though it soothed it was also prone to, in some ponies, having a side effect of causing the skin and muscles to relax too much, which went on to comment that this was particularly a problem in alicorn and unicorn ponies who had used the spell.

She thought that if her skin and muscles relaxed…that would give a bit of stretch, and wanted to test this out. She wondered just how far the ‘stretch’ would be able to give to her body. The book wasn’t specific on this part, and only warned of the dangers of employing the spell. She decided to try it, Twilight was never one to walk away from a new piece of magic, and if it could be employed to serve her purposes then all so much the better. If it helped her gain a bit of weight as well, that was also going to be a huge benefit.

It was by fortuitous design that below the bedroom was where the pantry was, her horn glowing Twilight performed a teleport spell not on herself, but on all the food contained within it. Despite the fact she was often alone in the castle, a large amount of food was kept in stock at all times to cater for last minute guests, or the usual surprise visits from all her friends. She was going to need every last bit of it tonight, as she looked up at the mountain of food now before her eyes. Obviously this huge bounty would not last the course, and she had plans on how to get more – as long as the first part went to plan.

She positioned herself in the middle of the room, which would be best as the space was needed, and the food was just slightly in front of her, she could easily begin to eat without having to use too much magic. She would have to save a lot of it for later when it was needed most.
The first piece of food slipped down her throat with ease, and the next piece, and the piece after that. Soon Twilight was beginning to eat at a rate only most ponies could dream of, a conjured aura around her belly giving her the necessary room to take in the food. She also extended it around her flank and the panties that adorned it so gracefully. As she ate she used her magic to caress her stomach, so that the absorbed calories from the food made its way to her rear. She hadn’t quite expected it to work so well, already she could feel the little panties tightening against her expanding flank. The sensation was amazing, as her buttocks expanded and the panties shrunk they quickly became lost in between her two swelling cheeks that were doing their best to engulf the thin material.

‘This isn’t nearly a tenth of the food in front of me, and already I’ve lost them into my swelling mass. Time to even the odds’ she thought, and with that her horn glowed and the panties suddenly re-appeared, bigger and now once again covering her ass nicely and firmly. ‘That should do it for a little while, I can always expand them again later if need be.’ She reassured herself.

Twilight continued to gorge herself on the food, and using the aura spell to caress her stomach and push the food back into her swelling flank that was continually expanding outwards and upwards. Her stomach was expanding as well, though not nearly as fast as her behind. It had reached a comfortable size where her legs and hooves were beginning to rub against it, and she relished the thought that soon it may reach a point where she could be lifted off the ground and feel even bigger than she did already.

Her cutie mark was now a thing of beauty, expanding its size along with her glorious butt, it was starting to rise above her body and shadow everything in the room. Her buttocks began to jiggle as once again the panties pulled tight against her huge canyon like flank which was now covering a large portion of the room. The swaying of her huge cheeks spurred Twilight on further to keep eating, and eating faster, as the feeling of her rolling and jiggling flesh brushing up and rubbing against the panties took hold of her. She expanded the aura spell around her flank further and rubbed her now towering ass with delight, which sent a shiver of pleasure down her entire body.

As her buttocks expanded further, shadowing the room, Twilight looked around her. The door which she had used to enter not long ago was now laughably small to try use to leave the room and by extension, her castle. The generous sized room would have to give way to her even more generous flank, which was now expanding at a visible rate. Once again the panties stretched against her flesh further and were being swollen up by the ginormous rear end, now only a small portion of the top where what remained of her hips was visible – the rest lost inside her heaving, swaying and rolling ass. ‘I must remember to thank Rarity for these later’ Twilight thought to herself ‘she clearly put a lot of work into these and the material must be something special for them to be expanding along with me like this, even if they do need a little help now and then.’

As she glanced over at the remaining stock of food she had summoned in from the pantry, Twilight felt a small portion of her increasing flank push against something hard. With what was left of her neck she turned her head – likely for the last time before it was engulfed into her belly – to see her massive behind and now house-sized cutie mark beginning to engulf the outer wall of the castle bedroom. She could feel her rolls of flesh pushing up against the thick crystal wall, combined with the ever increasingly tight panties that now looked like a small trophy holding together her incredible flank, she started to moan to herself ever so slightly. She wanted this to last as long as she could make it last, and she knew that to bring herself to heel she would have to get out of the castle, one way or another, hoping that she wasn’t too late before the inevitable happened.

It was a risky move, but Twilight was hoping it would pay off. She could see now the food, nearly depleted – would be what she needed to achieve her goal, and she would need to scarf it down her gullet quickly before the sensation of being confined to the bedroom, as well as the panties pulling against her overtook her senses. To help starve this off just for a little longer Twilight summoned her incredible magic once again, and like a ship rising out of the icy depths her panties once again rose out of her ginormous ass, now matching her size. Once again like the first time she had placed them over her flank, they were nicely tight but covered her well.

‘The material must have been incredible to keep being increased in size like this, yet when I keep growing bigger, once again they return to their original form…just well, bigger’ she mused to herself ‘I think Rarity deserves more than a thanks for this, I know she never intended them to be used this way….but I wonder. I know she said I needed to gain a little bit but never to this level, or maybe she did. I will have to question her later.’

Her train of thought was suddenly interrupted by the unmistakable sound of shattering glass. Her ass now so immense that it had pushed itself up completely against the rear wall, and even the incredibly strong windows could no longer contain its huge, jiggling mass. There was another crash a few seconds later as another window shattered, and finally the last few gave way. Anypony now wandering by the castle would have seen a number of huge, purple globes of butt cheeks poking out from the remains of the windows, which were now forcing their way through the frames and outwards into the open air.

Twilight was still rising upwards as well, the aura spell was doing its job, and it had the added benefit of being able to relax and expand her stomach as needed. No normal pony could consume this much food and live to tell the tale, not even Pinkie with her almost unbelievable eating habits. As she continued to finish off what was left of the food, she felt herself moving forward as well. Only slightly at first, but it continued. Clearly the walls of the castle were well built, and weren’t ready to give in just yet. This was compounded by the fact that her huge body had now started to sweat slightly to compensate for its girth, and as it dripped down her body it almost acted as lubricant that allowed her to push forward towards the wall on the other side of the room.

Now with her incredibly increasing plump posterior firmly wedged up against the rear wall, being held firmly in place by the parts poking out of the windows – Twilight knew she had to reach the wall on the other side and give her humongous body nowhere else to go, and that she could implement phase two of her plan and use the aura spell she had been continuously casting to firm up her currently freely expanding flank to give it enough oomph to push against the castle wall, and bring it down from within. If it didn’t work, well, a huge Twilight would be confined to her bedroom, with no access to more food – and she had much bigger plans for herself yet.

She was now a good 10 feet off the ground, and was able to use her new found height to stretch her fat, globular hooves outwards in front of her and get a firm grip against the wall in front of her, which she had now reached. She intensified her aura spell to help hold her front legs upwards which was a job in itself, her massive size now making even movement a strain, let alone holding up her legs which wiggled about uselessly, no longer able to serve the function of walking as her body writhed and sloshed below her. Soon though her body caught up to her, and provided a plump purple cushion to lay her legs upon. She was now firmly up against both walls, not being able to turn her head anymore and check for certain due to her immense neck with rolls of fat stopping her – she had to assume by the feeling of solid crystal against her buttocks and what she could see in front of her now meant she was touching both ends of the room, which not long ago had seemed so massive by comparison. ‘Time to implement phase 2!’ she thought to herself and grinned, if you could call it a grin, her massive cheeks now making any facial expression almost impossible to achieve. Her horn once again glowed brighter and she began her work with the aura spell.

With all her might, Twilight summoned two huge pairs of hooves just above her flank. As they winked into existence she gasped, clearly the extra strain of another spell on top of the aura took its toll and her body rippled from her horn downwards. She felt her buttocks sway and then slap against the wall behind her. As they did there was a faint cracking noise as the wall buckled slightly – she had not expected that to happen. The wall still stood though, and she put her huge new hooves to work.

With one on the left buttock, and one on the right, she pushed against her mammoth ass and the rippling cheeks firmed up against them. As she pushed harder with the hooves she felt the flesh in her flank tighten further. She also felt her butt cheeks push closer towards each other and the material of the panties getting crushed between them. It felt amazing, and it was all Twilight could do to stop herself yelling out in pleasure and attracting attention – the last thing she would want is Spike coming in. Not that he could, she had now expanded outwards and covered the door. His advance into the room, if it came, would firmly be rejected as the door was tightly held shut by the side of her extensive flank.

For a little while not much happened, Twilight continued to finish off the remaining food, now dangerously low and felt her tremendous posterior expanding still, but nothing from the wall. After a few minutes however she heard the unmistakable sound of the window frames popping out of place, her immense ass trying to gain what little space was left. The window frames now gone, gave a little more room, but not for long. At first there was a creek, followed by a cracking noise as parts of the wall started to come away from the rest of the building. Spurred on by its imminent demise she upped the ante and pushed as hard as she could with the summoned hooves, and firmed her jumbo behind up even more against the wall.

With an almighty crunch, the wall finally gave way. Defeated by the hulking buttocks that had pushed their way up against it, it now lay on the ground far below the castle. Twilight let out a sigh of relief, and gave one last little push before she dismissed the hooves and again felt her body ripple with delight. As lovely as they felt against her, she needed all her might and magic for the final phase. The pantry food now all devoured, she needed to replenish herself ‘What do we think….Sugar Cube Corner?’ and as the thought came to mind, she could swear her thundering flank rippled with delight.

Chapter 3 - Bounty

This was what she had been saving herself for, and why it was so important to escape the confines of her bedroom and make it out into the cooling night air. Twilight was confident that now she was…mostly outside the building she could teleport herself to the outside of Sugar Cube Corner, there was no way she was going to get in. Her ass alone could put a serious dent into the building, and she wouldn’t want to upset Pinkie or the Cakes. Of course she would pay for the food later, being Princess did have certain financial benefits.

Twilight needed everything for this, she had teleported countless times before, but this time was very obviously different. The huge belly sloshing away between her hooves and the towering monstrosity behind her made that obvious enough. Her horn light dimmed as she prepared to slacken off and temporarily stop the Aura spell while she teleported – it had done a tremendous job of transforming her to her new colossal size so far and she would need it again when she arrived in town. Her body could now sustain itself and there was no chance she would shrink back to her normal size, that would require another spell.

As the aura subsided she had a brief chance to relax without the stress of having to keep a magic spell constantly on. As she did so her body sagged slightly and her butt cheeks very quickly became the victim of gravity, having held them up to a lovely round shape before using the spell. They suddenly also became very noticeably heavy, and due to Twilights body not quite matching the size of her incredible ass, she actually tilted up slightly forward as the butt took up the weight.
She was already missing the food, and started to begin casting the teleport spell. Usually this took mere seconds, if that – but there was no way she was going anywhere fast with a body and butt the size of a small house. A faint purple glow surrounded her, and then there was that familiar ‘ping’ sound as her whole body was transported magically from her castle, to a little way in town to the square in front of Sugarcube Corner.

There was a light thud as Twilight’s frame came to rest in front of the bakery. Nopony noticed the huge, swaying mass of flesh that had suddenly appeared in front of it. It was now past midnight, all of them tucked up in bed sound asleep. Quickly she re-applied the aura spell and her slightly drooping but cheeks came back to their full fleshy round glory above her head. Once again, and for the final time, she put that extra bit of magic effort in and the panties – almost forgotten until now, they again adorned her rear end. She was surprised they had yet to give way to her ever expanding ass cheeks and pondered what ponies might think when they rose from the beds in the morning, as she had a great plan for a grand finale with the treats from Sugarcube corner. But that was yet to come.

Being completely unable to move, another small amount of magic was expended to ever so gently release the grip of the lock on the front door, and again to open it so the bakery was now open to Twilights waiting, gaping jaw. As she used the last of her reserves she collected up the food that was inside the shop and transported it outside. It was huge…she might even say, a copious amount that was now in front of her widening eyes. Twice as much easily as she had gotten out of the castle pantry. It was perfect as she knew where it was going and exactly what she was going to do with it.

Before she began, Twilight performed one last spell on the now marquee sized panties adorning her beautifully big flank. A strengthening spell to make sure no matter how much her giant rotund cheeks pushed up against them and stretched them out, they would hold fast against the advancing and expanding butt.
This was it, time for the final phase – the big push (Twilight hoping the ‘push’ would be her butt, backwards and further above her body of course). She summoned the first cake towards her gullet and it slipped down her throat incredibly easily. Much more pleasant than the pantry food back in the castle, the creamy frosting on the cake making each bite and chew a pleasure. The other added bonus being the food was much more fattening, and quickly she began to expand herself again as she gulped down more and more of the cakes. She could feel her body convulsing as it adjusted itself to the new sensation of the sweets entering it, and powered through eating more and more with each bite.

Her huge body rose further and further above the ground, and widened to compensate. She was eating like a champion and pushing herself far beyond what she thought capable, the cakes were so moreish that she wanted to cram her mouth as full as possible of what she was eating to add to what she was feeling within herself. She also noticed despite her size she was actually getting cooler in the night air and with what little was left of her body, now a huge mass of fat resting beneath her overly fat face, she wiggled herself to see if she could feel what was making her cooler, and then it dawned on her.

Her ass was now so big, so colossal that it had risen high enough to cast a shadow over her back which was climbing as she ate more and more. The huge rippling cheeks were rising high above her body and she was thankful for the coolness. Again this pushed her further to eat more so the shadow could extend over her. Her cutie mark now bigger than a house, it showed off the sheer size of her massive flank even more, the star pattern that sat on her backside now larger and more graceful than anything else in the entire town.

Twilight had put herself where she was on purpose, there was a small, but oddly tall house just behind her, now no longer used due to its irregular size, nopony seemed to be able to live in it very long. In fact it was scheduled to be demolished soon, and Twilight thought as it was her royal duty to help ponies wherever she could, she was going to help. She was going to crush it in between her huge, swelling cheeks that even now were expanding their way towards the building. Her ultimate plan was the wedge the poor building, doomed to be crushed between those flabby globes of power and then use the aura spell to again push her cheeks together and bring the building crashing down, much to her delight – she giggled as she imagined her butt crushing the building, but not only that, how she would feel as her flank spread itself around the building as she increased her size yet again.

The panties had not been forgotten, once again now wedged deep within the canyon that was her buttocks they pulled tight against her flesh. Twilight could feel the soft material pressing up against the inside of her cheeks and she delighted in the feeling. She could feel every little movement her huge butt was making as it expanded more and more, covering them with its generous size. With what little movement she had left she shifted her weight slightly backwards and felt her butt move backwards and dig a little into the panties, which held fast thanks to her previous spell. She began ever so gently to rock herself back and forth, aided by the fat now building up in her into a rhythmic motion and each time she rocked herself, felt the panties dig into her enormous rear end. Each time it did it was ecstasy, the feeling of the material rubbish up against her butt sending it into an appreciative ripple of delight as she rocked herself. Backwards and forward….backwards and forwards. Each rock brought forth greater pleasure and Twilight was almost ready to give over to the feeling, until she felt something hard against the inside of her flank on its outermost limits. She had been continuing to eat during this time and obviously continued to get bigger and bigger. She had finally reached the outer wall of the poor building that was doomed to be crushed beneath her.

Not wanting to give up the incredible pleasure she was feeling from the rocking, Twilight continued to rock her body back and forth as her butt expanded itself around the building. Not only now was she experiencing the divine feeling of the panties digging into her rear end, but her ginormous globes of ass were rubbing their way along the outside of the building. It was getting all too much for Twilight who rarely felt such carnal pleasures and she began to moan to herself as she continued to sway back and forth. A low moan at first but as her ass expanded further and the more of her enveloped the building, she moaned louder and louder. To increase the pleasure she found the panties wedged deep within herself and grabbed them with the aura spell. She was now so large that even with the shadow of her butt she was starting to sweat more and more, and found that most of it was starting to pool down the crack of her butt and wetting the garment. She grabbed it and started to work it, up and down, up and down, rubbing it against herself. The double entendre of using the panties to spur herself on and wrapping her whopping cheeks around the building and rubbing up against that was quickly causing a sensory overload that soon threatened to overwhelm her. Should she loose herself to the moment or hold out until that building was well and truly crushed, with only splinters remaining. Perhaps…she could do both.

Like before a risky move but one that would satisfy her immensely, Twilight once again picked up the pace and ate at her absolute limit – the food stock now half gone but with plenty to spare, cakes disappeared into her at an incredible speed, almost becoming a blur. She was expanding so fast now it was hard not to notice her advancing size as she overtook the top of the building she was about to crush. All this time still rocking herself, rubbing herself with the panties and feeling the building pushing against her.

Chapter 4 - Collapse

She was there, she was so close she could feel the building starting to buckle. This was it, this was what would finish her off. She expanded the aura around herself once again, summoning in those two huge hooves to push her cheeks together. Now sweating and feeling herself becoming exhausted from all the work her body was putting in to not only expanding but sending feelings of immense pleasure all over herself she gave one final push to collapse the building and send her over the edge.

It all happened at once but for Twilight if felt like an eternity. The building behind her began to give way to the huge ass that had enveloped it; it buckled and strained against the fleshy mounds that pushed against it doing all they could to bring it down. Twilight with all her remaining might tightened the muscles in her flank and felt the squeeze against the building, her cheeks closed together and she heard the unmistakable sound of walls giving way and the building came tumbling down. With the new space where the building once stood her ass clapped together and gave a thunderous roar in triumph as it filled the space where the building had once stood. As her cheeks came together once again they squished the panties firmly into her butt with tremendous force that squeezed the material tight against her flank – the feeling of pleasure as the panties were pushed against her huge two huge wobbling globes sent ripples throughout her body that rolled around her flesh like huge waves of intense ecstasy that completely overwhelmed her senses.

The fat rolling around, the panties pushing and wedging themselves against her huge ass – it was all too much for Twilight who let out a gasp of appreciation for the sensations she was feeling. She was still rocking herself back and forth, her huge body and ass jiggling around trying to keep whatever the incredible feeling that was rocking around her going for as long as she could. Even though her huge ass was covering her in a cooling shadow Twilight was sweating heavily and could feel the drips of sweat pooling from her tail dock and running down between her cheeks, which was lubricating her in the most pleasurable ways.

Seconds had passed yet she could feel the dripping sweat soaking against the panties and making them, and her – more wet and wild than she could imagine. She revelled in it and huffed herself to a few more rolls around as the wet panties rubbed against her and spurred her further on into gratification. Her huge butt jiggling about and rubbing herself against the thin wet material it was at this point Twilight was simply overwhelmed by it all.

There was a gasp, her butt cheeks tightened for the final time, the panties wedged themselves as far in as they possibly could against her. Her whole body tightened as Twilight felt herself give in to the bliss of everything happening to her. She felt herself give in and suddenly as she has tensed she relaxed, immensely. A huge satisfied grin appeared across her face as she enjoyed every second of the self-indulgence she had brought upon herself and her new, incredibly colossal body that began to subside in its rolling and rocking motion that had brought her over the brink.

And just like that, it was over. All that remained were what little foodstuffs she somehow hadn’t managed to eat, and one absolutely massive pony taking up most of the street and beyond. How the heck nopony had heard the building come down or Twilight moaning herself into the next day she had no idea. She spied on the town clock that it was still only just 1:00am and decided to lay, content for another hour before shrinking herself down. Despite the abuse they had gotten the panties still remained intact, and she made a mental note to keep them close by. She knew she would find plenty more uses for them in the future. This was not the last time she was going to do this, it would be such a waste not to at least experiment a little more with the aura spell and see what else it was capable of. For now, she was just happy to know they could take a beating, as well as her huge body and butt which was just coming down from the high she had experienced. Oh yes, Twilight was going to do this more, and she was going to be…bigger and show Rarity just how much and how grand that garment that still adorned her could be.