Moondiapers

by Foal Star

Rating: teen
Tags: Twilight Sparkle, My Little Pony: Friendship is Magic, Princess Luna, Moondancer, Fetish, Comedy, Princess Celestia
Length: 11433

Luna and Moondancer are transformed into diapers by Twilight and Celestia.

Twilight and Moondancer accidently discover the art of diaper transformation. What follows is Luna and Moondancer are transformed into diapers by Celestia and Twilight who have become obssesed with the new spell.

Cover art Skitter

Published 2017-12-27 03:40:07 UTC
Last updated 2018-04-08 21:03:45 UTC

Chapter 1: Moondancing In Padding

Twilight was in one of the towers in Canterlot castle late one night, she was busy reading over a notebook by Princess Celestia labeled foal spells. The desk was a mess, with coffee mugs scattered all over the table and spell books stacked dangerously high on the right end of the table. But Twilight didn’t care as she was fascinated by the notebook. “It’s amazing! These spells are so advanced!”

She then paused in her reading and placed the book down and turned towards a letter near the left side of the table.

Dear Twilight

I found a old dusty book on how fun it is being a foal and I want to try some new spells with you and your friends. If you could, please review my notes; even though I was once your teacher your way better at translating powerful spells. Please be careful.

From Princess Celestia

Twilight gave a loud yawn as she sipped a cup a coffee and turned a page as she thought to herself these spells do look fun, but the question is what does Princess Celestia want to do with them? Then all of a sudden Moondancer stumbled into the room with a few notebooks stacked together with magic and placed them next to Twilight’s books as she exclaimed, “Wow looks like Celestia really went all out on these spells! I wonder why she’s so interested in diapers?”

Twilight shrugged as she took a quill and dipped it in red ink and began scrawling on a piece of parchment. “I have no idea, but some are extremely weird bordering what is known as chaos magic. I'm labeling the weirder transformations in red.”

Moondancer smirked taking a notebook and hoofing it to Twilight. “Here’s my notes on the inanimate transformation spells ”

Twilight took the notebook and placed it on the side yawning. “That’s nice, I guess we did enough for tonight.” She then turned to and stared outside seeing the moon setting.

Moondancer wasn’t ready to give up as she gulped and asked, “Tw..Twi...Twilight?”

Twilight turned with a tired smile. “Yes Moondancer?”

Moondancer gulped shuffling in her hooves and asked, “H...How...about we try a spell just a quick test.”

Twilight shook her head and began walking towards her bed. “No way we can’t risk it, besides a lot of those inanimate spells are extremely embarrassing and dangerous. I won’t allow anypony to use them. In fact i'll be sure to tell Princess Celestia we should end all research on diaper transformations. I just see no reason for anypony to turn into a diaper.”

Moondancer gasped shifting her glasses. “Bu...but Twilight! We made the spell! We created it over weeks of studying!”

Twilight was adamant shaking her head no. “There’s no way i’m going to test this spell onto anypony it’s to risky.”

Moondancer groaned crossing her forehooves over each other. “You were always like this back when we were study partners. You never did learn to take risks.”

Twilight sighed and continued, “Moondancer? I don’t know the reasons why Celestia has us research these spells. But I can't in the right mind have ponies turn into diapers. Your research wont be a total waste we can think of something better for inanimate transformations, trust me.” As she yawned and stretched her forehooves into the air.

The tired velvet coated mare began trotting to her bed as Moondancer hastily went to her personal notebook and flipped through the pages as she thought. Well if Twilight won’t help me perform diaper transformations i’ll do it on my own! There’s no way I will let all out research go to waste!

Later that morning as Celestia was rising the sun Moondancer held onto a finished page of incantations and diagrams describing the diaper transformation. But she groaned, “There’s no way I can pull a spell like this off. Only a alicorn like Twilight could.”

She turned to another book hoofing through it then giggled turning to a mind alteration spell. “This spell will make a pony acceptable to new experiences.” Moondancer smirked, “excellent all my research won’t go to waste.”

Moondancer turned to Twilight and hesitated watching the mare sleeping peacefully. She thought to herself, do I want to turn to a diaper? It will be super embarrassing but I can’t let all my work go to waste. So the determined mare lit her horn and sent a small bolt of light at Twilight’s head and the alicorn princess only shifted slightly in her sleep. Moondancer sighed in relief and whispered, “okay...um… Twilight you like diapers.”

Twilight mumbled in her sleep. “I like diapers.”

Moondancer giggled oh this is going to be good! and continued, “Twilight you love diapers they’re soft and poofy and they keep you warm and safe.”

Twilight gave a goofy smile and drooled a little as she repeated the words, “I love diapers they keep me warm..and safe.”

Moondancer smirked now for the kill. “Twilight we don’t have any diapers, so your going to turn Moondancer into a diaper."

Twilight whimpered struggling to fight the spell but Moondancer cooed, “it's alright I want to be your diaper.”

Twilight smiled at this and cooed, “I want to turn Moondancer into a diaper.”

She giggled then Moondancer cut off the spell panting. “Barely had enough energy to do that but it was worth it.”

Twilight kicked about and gasped sitting up. “Moondiaper what happened!”

Moondancer giggled at the name and cooed, “nothing Twilight I was going to go to bed just saying good night."

Twilight turns with her eyes peering at Moondancer and replied softly, “okay...uh Moondancer ...um I was thinking about what you said and well...maybe testing the diaper transformation isn't such a bad idea.”

Twilight got up and went back to her desk as Moondancer followed her and replied in agreement. “I agree one hundred percent remember Celestia wanted us to make this spell and she was adamant we succeed.”

Twilight gave a nod. “Right, now let me see…”

She turned through the notes of the spells and smiled. “Okay according to the notes you won't feel a thing in fact you'll still be alive as long as the diaper is intact. I'll wear you for three hours and i’ll try using you once for testing purposes.

Moondancer blushed using me? Well I don't know about that. “wow...um… maybe you don't need to use me please.”

Twilight eyed her and asked, “Moondancer? You said you wanted this so I have to use you to test the spell. If not then this whole thing is pointless.”

Moondancer groaned and asked, “okay so what happens if you use me?”

Twilight explained, “you’ll be cleaned immediately I found a spell to remove all mess and urine from you. But I promise to only pee. I'm not fond of messing myself or you.”

Moondancer gave a blush. “Fine, now that’s in order are we ready?”

Twilight looked over all the notes one more time and nodded, “were ready.”

The purple alicorn read the notes on the table as Moondancer gulped, “Twilight...uh be sure to only let Celestia know about this please?”

Twilight looked up with a smile. “I promise Moondancer in three hours you’ll be back to normal and only Celestia and I will know you were turned into a diaper.”

Twilight’s horn glowed and Moondancer closed her eyes and clopped her hooves in anticipation. This is it! This is when I make history!

The tendrils of magic wrapped around the yellow unicorn until they squeezed together and then a loud poof echoed throughout the tower. Twilight squeaked stumbling backward and landed on her rump. When Twilight finally got up all she could see was big purple clouds where Moondancer was. The purple alicorn gasped in horror, “oh my Celestia! What did I do!”

She ran over and blew the clouds away with her wings revealing underneath a neatly folded light yellow diaper. It had lines of purple and red for the waistband, Moondancer’s cutie mark with a big red moon and little purple star decorating the exterior, with wavy dark yellow leak guards lining the border. Curious, Twilight poked the poofy garment hearing it crinkle underneath her hoof she whispered in disbelief, “It worked.”

She poked the diaper again giggling more. “It worked.”

Than Twilight couldn’t hold in her excitement anymore as she hugged the diaper to her chest rubbing the soft padding across her fur hearing a symphony of crinkles and squealed at the top of her lungs. “It actually worked!”

She kissed Moondancer cutie mark and shouted. “You did it Moondancer! You did it! You crazy mare! We pulled it off!”

She took the diaper and gently stroked the padding and whispered, “its amazing, soft plastic fabric on the outside.”

Twilight then gently placed the diaper on the floor and opened it revealing the soft inner part of the diaper. She slowly pressed a hoof in the gel moaning a little as her hoof sank. “Oh Moondancer you're made of silicone gel.”

She then gently used her horn lifting it into the air and pressed it to her rump. The mare whimpered a little hearing the soft crackling that came after she pressed the foalish garment to her rump. The mare shivered all over before she continued thinking, I can’t believe i’m actually putting on Moondancer!

But Twilight continued to gently tape the diaper around her underbelly making sure to move her tail through a small slit in the back of the diaper. The mare then laid down on the ground and gently taped two sticky tabs over the purple and red front of the diaper and pressed them hard with a hoof creating another round of crinkles. Twilight finished by smoothing the tabs out perfectly over the front of the diaper and laid there admiring the leak guards pressed into her thighs with half of the tiny red moon coming over her crotch. She poked the bottom of the diaper feeling the soft gel mold into her hoof and whispered, “Moondancer you're made of a very high quality silicone gel. Maybe the diaper represents your personality you egghead.”

Twilight blushed with realisation that she was talking to a diaper. The mare then slowly got up and admired the foalish garment in a mirror blushing at how well it rounderd her rump. With the big red moon poking outwards and her tail trailing high above the padded rump. Twilight then began to waddle around smiling at how the diaper only gave her a slight waddle, “a perfect fit Moondancer not too much padding.”

Then the mare felt all the coffee from the night hit her bladder and the purple alicorn smirked devilishly, “well...Moondancer did say she didn’t mind.”

Twilight then let her bladder and sighed hearing the pee fill up the silicon gel and could hear the padding swell between her legs. When Twilight was finished peeing she sat down with a loud squish and pressed another hood into the diaper. “Super absorbent and durable excellent!”

Twilight scrunched her face as her horn lit up poofing the diaper as it went back to its original dry state and Twilight bounced on it making it crinkle. “Alright enough of that I better get to Celestia before she holds court and tell her the good news.”

Twilight got up and thought for a second. “But I need a way to hide the diaper…”

She went to her wardrobe and found she had a simple black dress and pulled it over her head. She blushed turning back to see the skirt of the dress round out where her diaper was. But the fabric of the dress was thick enough to hide the foalish garment, “it's not fashionable but it'll do the trick. Now I just I just need to walk slowly as to not make too much noise.”

Twilight practiced waddling around the room but it was difficult as the diaper made her back legs spread apart a little and created a awkward gait. She tried going slower and it worked making only slight ruffling sounds and her waddle was less pronounced and gave a satisfied nod, “alright that’ll work, I just need to get across the castle.”

Twilight cringed as she came out of the front door of her tower and trotted down the stairs making the diaper crinkling echo throughout the stairway. I better just get this over with!

So she decided to briskly walk down the rest of the steps despite the extra crinkles. The purple alicorn eventually reached the bottom where she looked down a hall filled with the royal canterlot guards standing at attention. The mare whimpered and gulped ok I can do this just go slowly.

Twilight then began her awkward waddle across the hall. With her forehooves going first and slowly moving her back legs. She continued onward with the guards turning towards her hearing the slight rustling she giggled nervously, “oh its uh..the dress it has... um...plastic in it.”

The guards all shrugged as she continued onward with her weird gait until one guard came up and asked, “uh...princess Twilight do you need assistance?”

She laughed nervously waving a hoof. “Oh no i'm fine, it’s uh...just that I uh...have to uh practice dancing!”

The guard chuckled, “oh yes you must be heading off to the garden part.”

Twilight's mouth dropped. “Gar...garden party?”

The guard nodded. “Yes in fact Princess Celestia is out there already.”

Twilight groaned as she screamed in her head. Oh no I completely forgot about that stupid garden party! There’s no way I can get to Celestia right now!

She started shaking with her back legs pressing into her diaper making a wheezing sound from her diaper. This made the entire guard turned towards her and Twilight's face turned a deep red Better think of something quick! Think what would Rainbow Dash do? Then a light bulb lit above the purple mare’s head. She threw a hoof in her face. “Wooh sorry must of been those beans I ate last night.”

The entire guard gave light chuckles as Twilight gave a few nervous giggles. Okay we can just perform the spell again. I'm not risking getting exposed in diapers in front of Canterlot’s elite! “Okay...well i'm clearly not fit for dancing. I better just head back to my room.”

She was about to run off when Luna appeared down the hall. “Twilight! I've been looking all over for you!”

Twilight cringed turning towards the giant dark blue alicorn. I don't have time for this Luna!

The princess of the night flew in and landed before the purple mare who stammered. “He- he- hey Luna I was going to just going back to my room.”

Luna rolled her eyes and scoffed, “oh no your not, My sister has been looking all over for you she said to take you to her personally.”

Twilight squeaked, “Oh I can’t i'm a bit gassy and i'm terrible at dancing! I just want to go back to my room!”

Luna rolled her eyes again, “no excuses we have a party to attend!” Then the dazzling dark blue mare lit her horn and the two teleported in a poof of blue smoke. As one guard sniffed the air and whispered, “is that foal powder?”

The two alicorns teleported right into a crowd of fancy looking unicorns in rich clothing dancing around with Celestia standing aside. Twilight was in complete shock as Celestia came up to her, “Twilight i'm so glad you could make it!”

Twilight scrunching the diaper between her legs and quickly exclaimed, “Celestia I need to talk to you I-"

Celestia interrupted, “Twilight stop being so shy I brought you out here for a reason not just for my little side project.” She gave Twilight a wink as the purple alicorn groaned and shouted, “yes I wanted to talk about that! Its-"

But then Fancy Pants with Fleur strolled up to Celestia who turned to the couple, “now I think you three have met before but were never been formally introduced. Twilight this is Fancy Pants my to go stallion on government in Canterlot.”

Fancy Pants bowed and asked, “How do you do Princess Twilight?”

Twilight gulped doing a slight curtsey making her legs bow, and creating a loud rustiling noise of the diaper her legs. “I’m doing well Fancy Pants.”

Fleur giggled and asked in a sweet tone,“what a funny looking and sounding dress. Is it a new style?”

Twilight who was now sweating nervously took a full wine glass from a table nearby I need something to calm myself this. I can do this I can get through this.

She sipped the wine while stammering, “yes it's a...um a uh new style called...um...a crinkle lacing its supposed to help capture...uh sweat from....dancing.”

She gave a sheepish smile and drank the rest of the wine. Fleur scrutinized over the dress with a steady gaze. “That's quite resourceful how many do you have?”

The purple alicorn stammered pouring herself another glass with her magic. “Oh only one Rarity made it for because I sweat alot when I dance.” She then gulped down another glass.

Fleur blushed, “well I must go and see Rarity and get one for myself I too love dancing but I hate it when sweat stains my dresses.”

Fancy Pants eyed Twilight. “Yes but why are your back legs spread apart? Is that the dress too?”

Twilight squealed gulping down the wine glass think! Think! Rarity always talks about fashion think of something! She explained “well...yeah...the...um...dress has a round bump like a petticoat. I was told their fashionable.” Twilight began pouring herself another glass of wine.

Fleur laughed waving a hoof. “Petticoats have been unfashionable for a hundred years darling, sounds like somepony gave you wrong fashion advice.”

Fancy Pants shrugged, “well it’s no matter that dress is fine and does its job. In fact would you care for dance with me?” Twilight slowly drank her last glass of wine and thought what do I do? If I decline they’ll keep asking questions about my dress. But if I dance there’s a more likely chance somepony will notices im wearing a diaper! But if I only do one dance I can easily excuse myself and get out of this party! Twilight just gave a nervous nod and squeaked, “ok why not?

Fancy Pants smiled and took Twilight by the hoof. “Excellent my dear, now just follow my lead.” Twilight trotted along to the dance floor. When they reached the center, she placed a hoof on his shoulder and grabbed the stallion by the waist. He then grabbed her on the side and they st started spinning around gracefully in beat with the music.

However the diaper also crinkled with every step Fancy Pants was no longer caring about the odd noise but other couples turned their gaze at Twilight who gulped and continued dancing. Calm down...you can do this...just swing to the beat this will be over soon.

Then she felt the wine do its work and she felt her bladder tense up. Fancy Pants chuckled, “Twilight you're quite the natural...did you take lessons?”

Twilight shook her head. “No...I...Well i've always been a free dancer.”

Fancy Pants laughed, “well your doing very well for a so called “free dancer”.”

Twilight felt a pang of needing to relieve her bladder when a odd thought went through her head. Soak the diaper. Twilight had to shake the thought out, gulping and accidently tripped on another mare’s hoof sending her to stumble and she felt a tiny drip of urine get soaked into her diaper.

Fancy Pants asked with concern in his voice. “Are you alright? You maybe a little tipsy from all that wine?”

Twilight laughed it off regaining her footing, “nope not me, I can’t get that drunk from a few glasses of wine.”

Fancy Pants shrugged and continued dancing with the mare as another thought invaded her mind. Do it again this time pee some more!

Twilight threw the thought out but lost track of where she was going and this time bumped her padded rump into another mare’s rump and the loud symphony of crinkles burst from the back making the other mare jump. “My goodness was that a diaper!?”

Twilight shook her head vigorously oh come on! How will I… She then blushed and whispered softly. “Nope no diaper...just uh...my...you know….the red river is flowing this month.”

The other mare blushed knowing what that meant and whispered, “oh sorry didn’t realise aunt flo was visiting. Please pardon me for my outburst earlier.”

Twilight threw a hoof, “it’s alright.”

The mare gave a nod and continued dancing with her husband as. Twilight sighed in relief that the lie worked.Fancy Pants strolled up and escorted Twilight back to the tables. “I think we both had enough dancing for today.”

Twilight sighed and rubbed a hood through her mane. “Sorry for being such a clumsy dancer.”

He laughed, “It's alright how about you sit down for abit you do seem quite stressed about something.”

Twilight could only scoff at the comment. You have no idea.
But as Fancy Pants was pulling out a chair for Twilight. A butler carrying a dozen glasses of wine didn't see the chair and fell over spilling wine all over Twilight's dress and into her diaper! The mare herself went tumbling down realising the loud hisssss of her bladder emptying into Moondancer.

The ponies around Twilight gasped at the commotion and started rushing over to see what happened. The purple alicorn herself was soaked in wine with her rump now expanding from being doubly soaked. The mare was cringing as she could hear her soggy diaper now squishing between her rump and the floor. Hopefully nopony has noticed the diaper I need to be careful about getting up.

Twilight slowly rose to her hooves sighing in relief that the smell of wine was besting the smell of her urine and that her diaper was still intact holding strong. I have to admit Moondancer makes one good diaper She then turned to all the worried guests and gave them a sheepish smile, “oh um...i’m ok just a little soaked is all.”

Fancy pants came up with a determined look printed on his face, “your far from alright, your petticoat and um...other thing must be soaked in wine. We should get you cleaned immediately.”

He clapped his hooves to call some maids as they came over Twilight squeaked no they can’t get anywhere near me! Twilight quickly pointed to the stallion was still on the ground dazed blurted out, “oh no help out the butler first he needs more help than me.”

The maids shrugged and as they helped the butler Twilight got up with her diaper making a loud plop between her legs and making squishy noises as she quickly started to waddle away back to the castle smirking, that butler may have actually saved me now I can get to my tower and change! But out of nowhere Celestia then swooped by snickering as she lowered her muzzle to Twilight’s ear. “Do you need a diaper change?

Twilight could only blush and turned to Princess Celestia who gave her a playful wink and with a glow of her horn the two princesses were gone.

Twilight was now in Celestia’s chamber who was blushing as the Princess of Equestria removed the purple alicorn’s soaked black dress like a little filly. Celestia finished taking it off and couldn't help but daww seeing Twilight in nothing but a light yellow soggy diaper with red wine stains and a yellow tinted bottom. The Princess’s former student could only think i'm standing here in nothing but a soaked diaper in front of Princess Celestia. If she wasn't the one who hired ne to make this stupid spell I would never be able to show my face in Canterlot again!

Celestia just scrutinized over the diaper eyeing the big red moon now sagging to the floor and asked, “so...i'm guessing that’s Moondancer?”

Twilight gave a nod blushing completely dumbfounded. “Yeah.. it is...I tried showing you that we finished the diaper transformation spell but I forgot about the dinner party.”

Celestia eyed the diaper circling Twilight like a vulture and tapped a hoof under her crotch making her squeak. “It's very functional even after all that there's no leaking. Im very impressed with the spell Twilight.”

Twilight gulped now a little scared. “I...I have to ask...wh...why would you want a spell like this?”

Celestia cooed tapping the soggy diaper. “Oh no need to worry about that. I won’t use it for anything devious a little harmless prank really.”

Her horn glowed and Twilight fell onto her back as Celestia hummed untapping the diaper but Twlight put her hooves on the tapes and stammered. “wa..wait I can just use a spell to make it dry again.”

The princess’s horn glowed and removed Twilight’s hooves from the front and cooed, “now now babies can’t play with their diapees.”

She then opened the diaper and removed it slowly and took a box of foal wipes and wiped Twilight’s bottom well with foal wipes and tossed them into a wastebasket.

Then all of a sudden The diaper made aloud poof and what stood was Moondancer drenched in wine and urine gagging, “oh Twilight why didn't you clean me before turning me back to normal!?”

Twilight squealed getting up “it's not my fault! I had to go through a dance party and I had wine spilt all over me!”

Celestia just hugged Moondancer and Twilight and shook them about, “thank you! Thank you! Thank you! for completing the spell!”

Moondancer blushed turning towards Celestia wow I don't think i've ever seen Princess celestia so happy before, “it was no problem really.”

Celestia put Moondancer down and explained. “Now that it works Moondancer you need to give me the notes for the spell and Twilight I need your help casting it.”

Moondancer giggled with excitement and exclaimed, “sure i'll help! Just let me get cleaned up first.”

Twilight shook her head and simply stated, “no way!”

Celestia and Moondancer both turned to Twilight and the princess of Equestria pouted a little and asked, “why not Twilight?”

Twilight growled at the two, “did you see what I had to go through? It was insane! Why on earth would anypony want to turn into a diaper! Sure I get Moondancer because she was psyched about all the research, but who possibly else would want to? I can’t do this Celestia im sorry.”

Celestia was stunned and looked down a bit disappointed, but Moondancer shook her head no way am I being peed on and turned into a diaper for nothing! Moondancer smirked andwhispered, “but you don't have a diaper Twilight.”

Twilight back legs instantly bonked each other as she felt like something was missing between them. The mare blushed, “so..so what?”

Moondancer gave Twilight a devilish grin, “so...if you want me to be your diaper agin were going to need the spell.”

Twilight shouted, “no I can buy my own diapers!” She squeaked putting hooves to her mouth and thought, why did I just said that! Why do I like diapers all of a sudden!

Moondancer just simply continued and asked,“but what if somepony sees you?”

Twilight glared at Moondancer and exclaimed, "i'll make my own using magic! That’s it! i'm not changing my mind!”

Moondancer got closer and whispered. “Ask yourself Twilight...will you ever have a diaper as comfortable as me?”

Twilight gulped, “I….uh…” As much as she wanted to fight the urge to say no she couldn't I really do deep down, want to turn Moondancer back into a diaper.

Twilight was now sweating profusely stomped a hoof and shouted, “fine! I'll give Celestia the spell on the condition you'll be my diaper again!”

Moondancer smirked, “deal."

The two shook hooves as Moondancer skipped off with a smile on her face aright a shower then I make history! Twilight eyed Celestia who cooed innocently, “Twilight trust me i'm only going to use the spell on one pony.”

Twilight still eyeing her former mentor simply asked, “who?”

Celestia laughed, “who do you think? my sister Luna.”

Chapter 2: The Lunar Padding

Luna was exhausted as she dragged herself towards her room. It was a long night dealing with horrible and strange nightmares and all the princess of the night wanted to do was get some sleep. The princess opened her door she found herself looking upon her bed just wanting to plop on top of it and dig under the covers. But Celestia was sitting on top of the bed with a long slim smile painted on her face as she asked, “hello Luna how was last night?”

She yawned and stretched her wings, “it was really tiring with a lot of nightmares.”

Celestia cooed,”oh dear, well I have the perfect thing for you. Come on over here.” She lead Luna to the bathroom as the lunar princess eyed her sister thinking, “what is she up to? This better not be some sort of prank.”

They then entered the bathroom and there was a giant hot tub with various faucets. Celestia squealed in delight,”its your very own hot tub I had it installed last night!”

Luna looked it over amazed with it made of a dark blue tile and the knobs were shaped in crescent moons. “Wow it’s beautiful but what's the occasion?”

Celestia shrugged as she explained,”well I had one recently installed in my bathroom. I thought you should have one too.”

Luna eyed the tub and thought she’s being too nice...this has to be apart of some prank. She looked up at her sister with a glare. “This better not turn my mane pink or something.”

The princess of the sun laughed, “oh don’t worry it’s not a prank.”

Celestia went over and turned the knob furtherest of the right and steamy hot water poured from the faucet as she explained. “This one turns on the water and controls the heat.” She then started to turn the second knob and the faucet started pouring out a white frothy soap that spilled into the tub. “This one turns on the soft bath salts.”

Celestia then turned on the last knob and blue misty foam came out filling the tub as the princess explained, “this one is the best it fills the tub with frothy bubbles”

She filled the tub with a beautiful white colored water with a dark blue bubbles bubbling all over the hot tub. Celestia turned to her sister “I promise this isn't a prank now come on and lay down and relax.”

Luna gulped as she settled into the suds and sighed as she let the bubbles settle over her and she felt her fur soften underneath the bath salts and absorbing the soft scent of the bubbles. As Celestia then came over and started massaging her sister’s shoulders waiting for the lunar princess to drift off her exhausted body being soaked in the hot steamy water and suds. Eventually Luna was out snoring with her head drooping and that was when Celestia smirked and thought to herself, it’s time to change Luna into my big thick diaper!

Celestia’s horn glowed lifting the sleeping alicorn out of the tub and focused her spell onto Luna with tendrils of white wrapping around the princess of the night and engulfed the entire bathroom into a bright white light.

When Celestia opened her eyes she turned to see that where her sister was instead a giant neatly folded dark blue diaper lying on the floor. Celestia slowly got up and walked over to examine her work, the diaper itself has a big black crescent moon on the fold of the plastic with a sparkly star printed plastic on the top of the diaper for the tabs to stick on and there were dark violet leak guards decorating the sides of the diaper. Celestia couldn't believe that she created a diaper this amazing and one that was so magnificently thick. She lifted the diaper within her magic and caressed it to her face feeling her fur sink into the plush as a cacophony of crinkles echoed from the padding. This made her shiver all over caressing the padded fabric and feeling the thick booster underneath the plastic coat. The solar princess squealed “oh Luna you're a fully functional nighttime diaper!”

Celestia then took a whiff of the diaper and moaned as it smelt of a midnight rain. “Oh sister your perfect in every sense of the word.”

Celestia laughed taking the thick diaper over to the bed and started to slowly tape the padding over her rump. She started with folding it out on the bed seeing the insides were dark blue as well but very plump. She gently pressed a hoof into the padding and watched her hoof sink into the thick fabric. The princess of the sun was amazed as she has never felt something so soft in her entire life. Celestia then whispered, “so what Twilight said was true. That if you relax the pony your going to transform they’re softer and can absorb more urine.”

The princess smirked as she whispered, “now it’s time to put you to the test dear sister.”

She laid herself onto the bed and slowly laid her rump underneath the diaper. She moaned as her rump just sank into the diaper and she slowly and carefully folded the top of the diaper over the front of her crotch and taped the little blue plastic tabs over the sparkly black plastic landing zone hearing the entire diaper crinkle as it caressed her fur. She then got up from the bed and wiggled her rump seeing herself find her sister’s mirror she saw the big blue diaper hugging her with it’s big black crescent moon pressed right around her rump. She giggled wiggling her tush, “oh Luna your the perfect diaper. Now I can really enjoy my day off!” Celestia instantly lit her horn and disappeared in a poof of smoke.

Celestia Here everything was ready her bed was now a oversized crib with pink bars and her soft expensive blanket turned into a pillow foal style blanket with a big sun stitched into it. She giggled at how foalish it looked. “oh Tia you outdid yourself.”

Celestia turned to her door an waddled over (with the diaper crinkling loudly) checking to make sure the magical locks were on just in case, “don't need any maids popping in seeing their princess in a diaper.”

She then flew upwards and plopped in her crib staring up at a little mobile overhead with suns and stars. She then lit her horn drifting a big foal bottle filled with a thick white milk and she began suckling at it moaning with every suckle and kicking about in her big poofy luna diaper. She was so engrossed in this that she barely noticed as somepony knocked on her door and annoying stallion’s voice drifted through. “Princess Celestia..uh I don’t mean to disturb you I know it’s your day off. But, these nobles are quite vicious and they want to discuss the matter with you about plans for the grand galloping gala with you. ”

She groaned rolling her eyes and groaned as she forgot all about that stupid meeting “Alright Blueblood i'll be out in a minute.”

The mare then tried removing the sticky tabs with her magic but the tabs didn’t budge. She eyed her diaper and lit her horn trying to remove the tabs again. But nothing happened they stayed put firmly snug around her waist. She was now shivering looking at the padding. “I need to get this off me.”

She tried to remove the diaper with her hooves but the tabs were stuck on there like glue. She rolled around her bed trying to tear the diaper off with her teeth in cacophony of crinkling and ruffling of sheets when Blueblood knocked again and asked, “is everything alright in there?”

Celestia paused as she was curled up in her crib with a mouthful of diaper. She spat it out and stammered,“uh yeah just uh...getting ready.” She quickly jumped from the bed and flew to her closet thinking, “it's alright I just need to wear something to hide the diaper!”

She then took out a long elegant purple dress and dressed it around her making sure the diaper was securely hidden underneath purple fabric. Then she sighed, “there that should do it after I finish this stupid meeting I can find Twilight and find out what’s going on?”

But then she took a step a crinkle came out and she gulped then took another step… crinkle...she groaned slamming a hoof to her face, this stupid diaper is going to be so loud everypony at the meeting will hear it! She groaned trying to think of a spell to hide the sounds but nothing came to mind then Blueblood knocked again “please Celestia hurry up!”

She rolled her eyes and flew to the door opening and staring at her nephew with a cold glare., “Alright alright!”

She continued along with the prince as they went past many guards and servants going about their duties and the faint crinkling sounds from her diaper perked some ears. But the ponies looked around not being able to trace the source of the sound. Celestia sighed in relief and continue her gentle stride all the way to along board room filled with canterlot nobles. The princess was so happy about how well she hid her diaper that she was careless and plopped on her seat then came a loud wheezing sound and everypony turned towards her with wide eyes. Celestia blinked and blushed,”uh..sorry...um...my...uh chef told me I should..uh eat more beans.”

The stallions all chuckled while some scoffed at her un-princess like fart. Fancy Pants was at the other side if the table who cleared his throat and began, “well no matter i’m glad you’re here. Now we can get on with the plans for the grand galloping gala.”

Celestia sat there for hours listening to proposals and accepting them and denying them when she felt a ping in her bladder the small urges to pee but she knew she couldn't go with Luna still strapped around her rump. Not only that she moved every so often making the diaper crinkle but as before with so many ponies talking nopony picked up the sound or disregarded it. She then heard a stallion propose. “Now princess I have many selections of fine wine for the gala would you mind taste testing them?”

Celestia groaned knowing she was already feeling the need to pee and was not in the mood for more liquids. But she consented grumbling “lets just get on with it.”

A butler brought in a tray with several glasses of wine. Celestia took each glass one by one and drank them she scoffed at a few glasses preferring the sweeter wine and declared her choices. But then another noble came up, “thank you princess, can you try my punch as well? I know it’s not wine but it’s still necessary for the success of the gala.”

Celestia groaned now feeling the urge even more but consented seeing she wanted to get this over with. Celestia was given a glass of punch she sipped it and nodded,”yes it's fine, now now move..”

But another noble came up, “um sorry but I was told we will be serving some liquor at this year’s gala. I thought you may try a sample of the whiskey I distil.”

Celestia rolled her eyes as a glass of whiskey was given to her she drained it slamming the glass on the table then declared,”its great now is there anything else?”

Fancy pants continued, “yes as you know the budget is complete, the activities finished, and guest list ready soon we’ll be handing out the ti…”

Then a hissing sound echoed throughout the chamber. Every noble in the room slowly turned their heads towards Celestia who blushed as she stayed perfectly still despite feeling a warm wet sensation fill her crotch. She was sweating and gulped as she explained, “oh that’s just the uh...pipes. in the walls.”

Fancy pants gulped and pointed, “Celestia...y...your dress is glowing.”

Celestia eyed him and looked down gasping seeing that on the bottom front of her dress was a faint glow. She squealed as she move her legs feeling the urine around the crotch of her diaper. She quickly got up with a loud squelch emanating from her diaper which caused every stallion to look her direction she stammered,”I uh..it..it’s a alarm! I have to go!” She quickly ran out of the hall with the loud squelching following behind.

Celestia found the nearest bathroom and shut herself in gasping “how in the hay could this have happen to me!”

She then took off her dress with fury and turned towards the sodden diaper strapped around her waist and shouted,”Luna your getting off me if you like it or not!”

She then rolled on the ground as she lit her horn tugging and struggling to remove the padding then she flipped upside down to see Twilight Sparkle blinking in surprise. Celestia’s face turned a deep red. “Uh...twil..Twilight. Uh…”

Twilight looked at the dark blue diaper with the fading crescent moon on the front and whispered,”is..is that Luna?”

Celestia nodded as she got up and explained,”yes please you have to help me. For some reason she won’t come off me! I tried everything.”

Twilight looked the diaper over and giggled, “oh my you’re soaked,” Celestia rolled her eyes, “thanks for the observation Twilight but can you help me?”

Twilight tapped a hoof on her chin then asked,”lay down for me.”

Celestia squeaked ”Twilight that’s not necessary.”

Twilight blushed,”uh..well I never came across this problem before but as you know the diaper will reflect the pony’s personality. Now Luna here is clearly a diaper mostly used for nighttime use only and if i’m not mistaken foals move around alot at night. So to prevent their diapers from falling off some brands have a simple lock spell that makes it impossible for the foal to remove the diaper. In that case…”

Twilight simply removed the tabs of the diaper and opened it. “Then anypony besides the wearer should be able to open it.”

Celestia face was now just red with her student standing over her former teacher with a open used diaper like a foal. Twilight then poofed a box of foal wipes and cooed,”Alright hold still.”

She made quick work wiping her rump clean then taking the diaper within her magic and zapping it removing the moisture and turning the diaper back into it’s clean folded unused state. Twilight asked,”now I assume you don’t want this back on?”

Celestia sighed,”no Twilight the spell should be wearing off in a hour as I set it for three. I just wanted to have a little fun. But I forgot about a meeting I scheduled for preparations for this year’s galloping gala. “

Twilight blushed,”oh wow..well we still have an hour…
“
Celestia shook her head, “sorry but im done ill just release the spell when i’m back in luna’s room.”

Then they heard the door opening and Twilight and Celestia both turned with surprised looks as Twilight lit her horn poofing the dress on Celestia and the diaper strapped around her teacher’s rump making her squeal feeling the padding hugging her flanks again. Then a maid came in with a mop and bucket blushing. “Oh uh sorry you two still need to use the bathroom?”

Both princesses shook their head, Twilight replied,”nope all done, were just uh finishing up.”

Celestia just gave a sheepish smile,”yes thank you.”

The two alicorns both quickly filed out of their bathroom with the maid turning at the odd crackling noise. The two gasped as they continued walking and Twilight whispered ”sorry I didn't know where else to hide Luna.”

Celestia whispered,”it’s okay let's just get back to Luna’s room.”

She lit her horn and was about to transport the two when a big brown coated earth pony chef came running towards them shouting. “Celestia! i’m so glad I caught you.”

Celestia gritted her teeth and and growled, “yes?”

He blushed and ground a hoof into the floor as he explained,”well I just finished making you a cake for your day off and I just want for you to uh taste it first.”

She sighed “alright I guess I can do that.” Twilight blushed as Celestia waddled off with the chef.

Celestia was sitting down in the royal dining room trying to make as little crinkling with her diaper as possible. with the chef bringing the cake down in front of her. The cake was huge covered in thick white frosting with pink roses made of frosting lining all around the cake. He sighed,”i'm trying to make the perfect cake for your birthday this is just a prototype.”

She sat down slowly at her seat not wanting to repeat the mistake she made at the meeting with nobles and was given a plate with a single slice. Celestia took up a fork and knife and ate a bite and blushed at how soft and creamy it was. The mare couldn't help herself as she devoured her first slice and whispered. “In the thousand years of being a princess th..this is the best cake I have ever tasted!” The chef smiled proudly as Celestia took another piece from his masterpiece he proclaimed, “go on have as much as you want ! It's your day off.”

Celestia forgetting all about her diaper dived into the cake eating slice after slice not releasing the pressure starting to form in her bowels and she squeaked holding her gut. The chef became concerned, “Celestia are you alright?”

Celestia gulped with sweat pouring down her face. “I...I uh it’s amazing really i’m fine...I...I.. just need to find Twilight.” She quickly got off her seat and waddled off as fast as she could.

Celestia went down the halls with the pressure in her bowels growing with every passing second. Celestia eventually found the princess of friendship in the throne room with Prince Blueblood, she was explaining something to him. “Now I don’t think you can just declare your birthday as a national holiday.”

Prince blueblood stomped a hoof as he pouted, “And why not?”
Twilight rolled her eyes. “Again what did you do to help Equestria? Did you save it ? did you invent something important? Did you do something heroic? Just because your a prince doesn't mean you just get a holiday!?”

Celestia waddled over and gulped “wha..wha do I say? I have to speak in code something that only she can understand.” The pressure in her bowels made her skip over and prince Blueblood scoffed,”my goodness what is that crinkling noise! I’ve been hearing it all day!”

Twilight turned towards the princess and asked,”uh Celestia...you done with the cake testing?”Celestia nodded her face rapidly as she bounced a little the purple alicorn feeling something was wrong persisted,”uh..is something wrong?”

Celestia gulped and asked, ”Twilight..Luna needs you...she’s uh going to uh...make a mess.”

Twilight’s face turned white and got the message. “Okay Blueblood we can continue this conversation later.” She took Celestia by the hoof and shouted,“alright come on!”

She lead Celestia away as Prince Blueblood scratched his face. “What is going on and what is that crinkling noise?”

The two were almost at the bathroom with Celestia face brightening up at the sign of a mare on a door, I never thought in all my years how relieved I am to see a bathroom!”

Then Fleur came out and she giggled. ”oh princess Twilight, princess Celestia how are you two doing?”

Twilight asked,”hey Fleur uh were just using the bathroom.”

Fleur looked at them what Celestia now gently moving on her back legs. She eyed them“ together..is there a secret club or something?”

Celestia gritted her teeth. ”No just need to go really bad move out of the way please.”

Fleur moved out of the way. “Why of course but uh could I borrow Twili…”

Before Twilight could answered Celestia growled,”no she can’t I need her!”

Fleur paused looking at Celestia with a surprised look ,”uh...but why?”

Twilight gulped, “I..uh ...just need to...uh help Celestia with..looking for a horn ring she had she thought she lost it in the bathroom and needs my help to find it.”

Fleur smiled as she replied,”oh well how about I help look for the ring as well you‘ll find it alot faster with a extra pair of hooves.” Celestia wanted to scream at Fleur feeling her bowels about to burst.

Twilight squeraked, “oh no were fine you go on I promise i'll catch up.” Fleur nodded and was going to leave when Fancy Pants came by laughing “oh there you are darling seems like I had to use the little colt’s room as well as they say.”

Then a rancid smell emanated outwards as it engulfed the area. Fancy Pants gagged putting a hoof to his face. “My word what is that smell!?”

Twilight turned to Celestia with a horrified expression and she was nearly going to burst into tears but Twilight quickly stammered, “uh...I bet a pipe burst or something you two go and get some plumbers! We’ll see what we can fix!”

Fancy Pants nodded in agreement wanting to get away from the smell gagging. “Right away come darling I think I saw a plumber near the fountain outside.”

The two quickly ran off as Twilight lead the humiliated princess of the sun into the bathroom.

Twilight was quick in getting rid of all traces of Celestia’s mess from both Luna and her body wiping her down and poofing the diaper into its clean stated then when finished Celestia instantly teleported herself and Twilight into Luna’s room shouting “I am never ever doing this again!”

Twilight giggled , “I mean look at the bright side nopony noticed...I mean you just pooped in a diaper in front of Fancy Pants for crying out loud!”

Celestia thought for a second and burst into laughter as she sighed,”yes Twilight it was a experience, but it’s one I rather not repeat. Let’s get Luna back into the tub.”

They quickly settled the clean crisp diaper into the sudsy steaming water and Celestia instantly shot her hron turning the padding back into the princess of the night still deeply asleep. Celestia smirked, ”she didn't notice a thing.”

Twilight nodded as she explained, ”the spell I learned removes all traces of foreign elements on a piece of clothing. Trust me she’ll never know what happened.”

Celestia sighed, ”okay then maybe we should stop using that spell. I mean I almost humiliated myself in front of all the nobles of Equestria.”

Twilight blushed and ground her hoof.“Yeah this spell is stupid..may...maybe we can use it just one more time…”

Celestia eyed her and asked, “For what?”

Twilight gulped then looked up and asked, “maybe for a foal style sleepover?”

Chapter 3: A Lunar Padded Sleepover

Luna and Moondancer were walking down a road in Ponyville coming back from a long nice day at the spa in Ponyville. Their coats were silky smooth and they look refreshed and happy from the spa date. Luna sighed in relief shaking her sparkly dark blue mane and moaned, “oh that spa was so relaxing with my new hot tub and this spa date i'm starting to feel so much better after dealing with so many nightmares.” Moondancer smiled and replied, “ it’s bet it’s been ages since you came out of Canterlot Palace it’s about time you got some relaxation into your schedule.”

Luna also nodded and smiled, “Oh I know, but I've just been busy with patrolling the dream realm you lose track of time when your so busy sometimes.”

Moondancer ground a hoof into the dirt and nodded as she confessed, “yeah I know what you mean. I used to spend all my time studying and alienated my friends.”

The lunar princess put a hoof on the unicorn’s shoulder, "guess you and I aren't’ so different.”

Moondancer blushed as she adjusted her glasses. “So you up for the little sleepover at Twilight’s?”

Luna nodded as the two continued their walk. “Yes I cannot wait to see it, I’ve of course visited Twilight in her dreams and have technically seen her castle. Just never in person.”

Moondancer nodded, “yeah I haven’t seen it either this is going to be quite the experience for both of us.”

Trixie bounced out of some bush and threw her hooves in the air, “how could you forget the great and powerful Trixie is coming along!”

Luna turned around to see the blue coated mare and smirked, “yes Trixie we didn’t forget about you in fact we had a seat reserved for you at the spa why didn’t you come?”

Trixie crossed her hooves “well Trixie had a show to perform and isn’t fond this spa.”

Moondancer rolled her eyes. “From what I heard you’re not very fond of anything that doesn’t have to deal with you.”

Trixie shoved a hoof towards Moondancer’s face. “How dare you insult the great and powerful Trixie I’ll have you know The great and powerful Trixie saved Twilight and her friends from the clutches of Chrysalis and deserves to be treated with respect.”

This time Luna rolled her eyes, “Trixie were not here to insult you were here to have a slumber party so are you coming or not?”

Trixie gave a humph as she crossed her hooves. “Fine I will just follow you to this slumber party. Thankfully Starlight told Trixie she would be there.”

Later that evening the three ponies were in Twilight’s parlor laughing as they were sipping tea and chatting. Twilight came by with a plate of little cupcakes in her magic and asked, “how are you three doing?

Luna gave Twilight a loving smile as she replied, “I'm doing very well Twilight. Thank you for doing all of this.”

Moondancer smiled and nodded, “yeah I never felt so pampered in my life thank you Twilight.”

Trixie bounced up. “Well Trixie has to say Trixie never felt so happy!”

Twilight smirked “oh that’s good glad your feeling relaxed and happy.” Moondancer gave a sheepish smile turning to Twilight and giving her a wink.

The purple alicorn nodded and lit her horn as she cast the spell on the three all mares creating a large cloud of purple smoke. Twilight coughed and waved a hoof and as the smoke cleared in there place was three thick and nicely folded diapers lying where the mares once sat.

Starlight and Celestia crept downstairs as Starlight gasped. “The spell worked! It actually worked! I thought You two were just pulling my tail about this diaper spell!”

Twilight nodded as she took Moondancer the diaper within her magic and examined it closely, as before the mare now turned diaper was neatly a folded yellow plastic square. It had lines of purple and red for the waistband, with Moondancer’s cutie mark with a big red moon and little purple star decorating the exterior with wavy dark yellow leak guards lining the border. Twilight laid down on the ground as she explained, “Of course it did. Now Starlight remember this has to be a secret, I promised Celestia this would be the last time we use this spell. After tonight I'm destroying it forever.”

Celestia smirked as she held the neatly folded diaper that was once Luna and looked the padding over. The padding had a big black crescent moon on the fold of the plastic with a sparkly star printed plastic on the top of the diaper for the tabs to stick on, and there were dark violet leak guards decorating the sides of the diaper. Celestia nodded in approval and cooed, “right this is just one night of fun in diapers. Twilight will reverse the spell before I raise the sun tomorrow.”

Starlight looked around nervously and asked, “so what about Spike does he know?”

Twilight who was taping herself into Moondancer feeling her rump sink into the familiar padding moaned, “he’s at Rarity’s helping her with a special project.” She then began taping the tabs over the red and purple striped plastic field and pressed down firmly the purple alicorn continued explaining, “He’ll be gone all day and I told him he can spend that night there.”

Celestia who was busy taping herself into Luna also moaned and kicked about making a symphony of crinkles. She moaned feeling her rump sink into the fabric of her sister and taping the blue tabs on the starry black plastic field of her diaper. The princess then looked up at Starlight just standing in the middle of the room looking perplexed and cooed,”come on you need to get padded up too...unless you want help?”

Starlight gulped as she slowly came over to Trixie’s diaper and looked the fabric over. The diaper itself was folded neatly as a plastic square which was light blue in color with dark blue leak guards lining the sides, Trixie’s wand and light blue crescent moon cutie mark was printed on the front of the plastic , and there was an array of little purple and pink sparkles lined the plastic where the tabs met. It was quite thick but had little white smudges showing that it has fresh powder and seemed quite comfortable. Starlight shuffled in her hooves seeing how her best friend was now a poofy diaper the mare’s face turning a bright red as she asked, “Twilight can you tape me up in my diaper?”

Twilight nodded as she got up shaking her padded rump. “Sure now come on over here this won’t take long.”

Starlight slowly trotted over to Twilight and laid down as Twilight lit her horn draping the light blue diaper over. The padded purple alicorn cooed, “okay stand still this shouldn't take long.”

Starlight just gulped as Twilight began taping the diaper around her rump. She squirmed and squealed as Twilight tugged her tail through the back and folded the diaper over the front of her belly. Than Twilight finished by tapeing the blue tabs taped snug on the starry plastic landing zone. Twilight patted Starlight’s padded rump and giggled, ”now get up and waddle about.”

Starlight nodded as she slowly got up on all fours blushing at how the diaper pushed her back legs apart. The mare waddled around and sighing how comfy Trixie was and laughed, ”aww the soft and poofy Trixie she’s perfect.”

Twilight clapped her hooves with glee. “Yeah she looks perfect on you Starlight.”

Celestia was too busy waddling around in Luna the diaper as she moaned, “Oh I missed you Luna you were such a good diaper.” But the princess reminisced to when she was trapped in the diaper and pooped in front of Fancy Pants and Fleur. Celestia turned to Twilight with a sheepish smile and asked, “um Twilight can you lock the doors? I rather not have some pony come in and see us.”

Twilight smiled and nodded,” of course.” The purple alicorn waddled away as Starlight and Celestia turned smirking at how Moondancer kept Twilight’s legs apart and how cute Twilight’s waddle was with Moondacer’s cutie mark bouncing in the back. Twilight could feel their gazes and looked back with her face flushing red as she meeped, “come on stop staring.”

The other mares just giggled as Twilight rolled her eyes and locked the doors with her magic. She turned back to the mares and explained, “okay now we can start I have everything set up in my room.”

She lead the two upstairs with their diapers crinkling throughout the castle Celestia sniffed the air. “Oh I do love the smell of a fresh diaper.”

Starlight sniffed her own diaper getting a whiff of mist and foal powder combined together. Starlight turned back seeing poofs of foal powder bellowing from the leg holes with each step. The unicorn commented. “My diaper smells good but a little too powerful.”

Celestia giggled, “kind of like Trixie herself?’

Starlight eye the princess of the sun. Celestia then began explaining, “Twilight’s theory on that is the diaper reflects the pony’s personality…” Celestia looked back at her own diaper as she continued, “my diaper is clearly made for nighttime use and even has a spell lock only allowing other ponies to open it for me.”

Starlight squeaked. “hopefully my diaper isn’t like that.” She tugged at the tabs with her magic and sighed seeing them open. The mare quickly sealed the tapes back onto the diaper as Twilight turned around and asked, “oh did you pee already?”

Starlight squeaked in horror and scoffed, ”no! Of course not!”

The purple alicorn blushed as she explained, “oh well, I was just going to say you won’t have to worry about that, I enchanted my Castle with a spell where if you mess or pee your diaper you just need to say “mommy please change me.”

She squeaked as her diaper poofed as foal powder poofed from the leg holes and the two other mares chuckled. Twilight turned towards the two blushing as she finished explaining, “ as you can see, you will instantly be cleaned so we won’t have to worry about changes.” Twilight then opened the doors to her room which was now a giant nursery with the floor covered in a pink foam, and the walls also were covered in the substance. The room was filled with oversized foal toys and plushies and a purple padded changing table was in the back and her bed had pink rails and cute comfortable foal blankets scattered around. The purple alicorn stood on her hind legs and lifted her forelegs in the air proudly showing off Moondancer the diaper as she exclaimed, “welcome to my padded sleepover here you can romp and play as a foal to your heart’s content!”

Celestia and Starlight looked around stunned with disbelief as Starlight whispered, ”wow you really went all out.”

Twilight went back on all fours and beamed a smile of pride and chirped, “thanks.”

Celestia smirked and cooed, “well let’s begin with a game of diaper tag.”

Twilight eyed her former mentor and asked, “what?”

Celestia took the back of her diaper and crunched up into Starlight’s diaper with a loud symphony of crinkles squeaking as she ran off and Starlight giggled “hey you get back here.”

Twilight joined in and soon starlight was running around the room trying to tag the two alicorns. But Starlight eventually caught up with Celestia first and scrunched her diaper right up with the princess of the sun and giggled hearing the diapers crackle. The alicorn giggled and chased after Starlight shouting, ”Im gonna get ya!”

Starlight squealed as Celestia bumped into her sending the two into a wall and Celestia tumbled backwards exposing her adorable dark blue colored diaper with Luna’s black crescent moon cutie mark to the world . Starlight laughed and poked it with a hoof, “aww look Tia is all padded up what would your subjects think of their princess who’s still in diapers.”

Celestia blushed thinking back to how she was almost exposed in wearing a diaper not just a week ago and scoffed, ”well look at you puff butt your diaper is thicker than mine.”

Celestia got up and pounced on Starlight and scrunched her diaper on top of the unicorn’s smirking. “Tag.”

Twilight snickered as she took a foal bottle filled with a white creamy liquid and started suckling it. “Oh yum this is so good.”

Celestia waddled over with her eyes aglow, “oh what are those?”

Twilight looked up and giggled, “oh yeah these are just ice cream floats blended to look like formula, Pinkie pie showed me a recipe she did for a baby shower she hosted not to long ago.”

Celestia took one of the massive foal bottle and plucked it into her mouth and began suckling. She beamed a smile as she let the frothy creamy liquid run down her throat she took it out with a adorable and audible pop as she shouted “this is delicious!

Starlight waddled over and gulped seeing one bottle was left and whispered. “Um...i’m not sure about drinking liquids considering…”

Twilight turned towards her as she took out the bottle, “There's no need to worry I told you if you pee or poop in your diaper it’ll be instantly cleaned.”

Starlight ground a hoof into the pink fabric and continued, “I’m not comfortable you know doing that yet.”

Celestia blushed, ”oh well that’s okay I know exactly how you feel.”

Twilight pointed to the bathroom with a sign nailed on the door that said “big fillies only” and explained. “If your not comfortable peeing your diaper you can use the bathroom."

Starlight smiled and whispered. “Oh thanks Twilight.” She then waddled over and took a bottle as she laid onto her back and started suckling the creamy liquid from within.

Twilight giggled looking at Celestia and Starlight sitting down on the floor and hugging their bottles with both hooves and cooed, “awww, we do look like three little foals having our babas.”

Celestia giggled kicking about in her diaper. “Isn’t that the point of all of this to be foalish.”

Starlight smirked, ”who do you think will pee their diaper first?”

The princess of the sun turned to Twilight with a smirk. “She peed her diaper after only drinking a few glasses of wine.”

The purple alicorn scoffed,”Well you couldn’t hold your bladder either you nearly soaked through poor Luna when I found you in the big fillies room.”

Celestia eyed her former pupil and laughed, “okay your on piddle pants, first pony to pee their diapers get’s to do all the work for the other princess for a week.”

Twilight laughed “okay deal!”

The two princesses shoved the giant foal bottles into their mouths and started chugging the floats and Starlight just watched with a smile. The alicorns chugged away until their bottles were empty then both gave loud burps and Starlight burst into laughter “aww do you two need to be patted on the back!?”

Celestia smirked as she exclaimed, “well since Starlight didn’t want to join or chugging contest how about we try making her pee first!”

Celestia tackled starlight and started tickling her with her giant wings making the unicorn giggle and squirm “stop that!” Twilight pressed a hoof into Starlight's diaper. “Come on Starlight."

The mare couldn't help it as she started soaking Trixie hearing the audible hisss as her diaper soaked up the urine. Then as she finished the mare grumbled, “mommy please change me.” Then the diaper was magically cleaned with a poof of foal powder as she blushed Celestia laughed patting the diaper.“Aww that was so cute!”

Starlight rolled her eyes and growled, “Yay you made me pee my diaper.”

She slowly got up gasping at how the foal powder bellowed from the leg holes. There is way more foal powder then there was before.

Starlight just shrugged thinking nothing of it then turned to Twilight who started putting the foal toys and other bottles away. Celestia giggled waddling over and helped chanting, “clean up, clean everypony do their share.”

Starlight waddled by and chanted as well, “clean up! Clean up! Everypony do their share!”

Soon the three mares cleared the room and Twilight went to her enlarged bed and putting down of the rails she cooed, “okay Tia your first.”

She blushed “oh thanks Twilight you’re so kind.” She settled under the sheets sighing feeling how comfy the foal blankets felt on her fur. Starlight was next as she settled down with Celestia. Twilight dimmed the lights as little moons and stars danced above the three mares as they settled underneath the sheets and snuggled together. As Celestia cooed, ”don’t pee in your sleep Twilight.”

Twilight laughed “sure piddle pants whatever you say.”

Starlight snickered and looked up at the starry ceiling and sighed as she thought this was a lot of fun actually. Twilight was right these diapers are amazing and pretending to be a foal was so relaxing. I hope Twilight doesn’t destroy that spell I bet other ponies could make for excellent diapers.