Momlestia comes to the rescue

Twilight was slowly walking, thinking about the aftermath of a disaster of a fashion show the night before. Rarity had (with some convincing) then held a “better Fashion Show" where she had herself and her friends perform in front of Hoity Toity with the dresses she’d originally created. And the stallion was quite impressed with these designs, compared to the ones the night before that he’d called “A piled on mishmash of everything but the kitchen sink”.

Now Twilight reached Carousel Boutique she had been “invited” to a special show that evening just for her. She was quite unsure of what was going to happen, yet she still cautiously entered the boutique with all the dresses and clothes standing around, ominously blowing about slowly from the gust of wind that came from the entrance. The atmosphere in the boutique felt quite eerie and unsettling, making Twilight shiver. She slowly walked to the stage that had been set up early that day, and looked up and her eyes grew wide upon seeing Celestia standing over her. “P...Princess!”

“Ah, Twilight, it’s so good to see you here,” The princess of the sun cooed with a motherly smile on her face. The princess then slowly came over and looked over Twilight's rump as she asked. “Sweetheart, why aren't you wearing a diaper?”

“Are you kidding me?! I’m not wearing one out in public, not even at night!” Twilight shouted with her face turning bright pink, feeling a bit lucky she hadn;t had an accident on the way over.

“That’s quite alright, Princess Celestia, she can try out the new diapers I made!” Rarity exclaimed, coming out from behind the curtain. Suddenly bright lights glared down on the stage as smaller lights lined the catwalk. Rarity strutted down the walkway, sporting a diaper with Luna’s cutie mark printed on the back, little silvery stars and moons on the seat of the padding along with nightblue colored leak guards. She came down and stuck her rump out at the two mares as she exclaimed. "What do you think? Princess Luna gave me a few tips on night time diapers if you can believe it!"

Twilight placed a hoof over her mouth and snickered, seeing her friend wearing a poofy, foalish garment and showing it off quite proudly.

Celestia, however, rolled her eyes, appearing to be annoyed as she responded. “Yes, it seems my sister had a hoof in helping you design these new diapers. Although I wonder why, that doesn’t sound like my sister.”

“She just wanted to surprise you, darling, that’s all,” Rarity chirped as she came over to Twilight. “Now, Twilight, the reason I only needed you to come over was so I can try out the new dress I made for you, along with the added benefits of demonstrating one of my special diapers.”

“Right...I was going to ask about that...but...I was too embarrassed to let the rest of our friends know,” Twilight whispered, feeling so weird at having to ask such an embarrassing question. “I still can’t believe you and Applejack know, and that you’ve managed to keep the secret for this long.”

Celestia then laid Twilight down, and the agitated purple coated unicorn started squirming and shouting. "Hey! Don't diaper me in front of Rarity! I can do it myself, and I always do it out of sight back at the library."

The princess seemed unphased by Twilight's whining, instead placing her down on the changing mat as she took out her pink diaper bag and she cooed. “Oh hush now, Twilight. Just lay down and relax, this won't take long."

The unicorn reluctantly did as Celestia asked for some reason, almost too much like an obedient foal. The princess then had Twilight’s rump lathered in foal cream and had a healthy amount of foal powder poured onto her rump as well. Celestia then went about swaddling Twilight up in a thick diaper, which was then brought up over the unicorn’s rump and taped snuggly.

Twilight walked around in her new pampers, breaking them in. But she then suddenly came to the realization that there were no crinkling sounds emanating from her diaper. In fact, there wasn’t even any trace or smell of foal powder and it was almost unreal.

Rarity stomped her hooves on the ground in applause. “Marevolus, simply marvelous, darling! You see, Twilight? It’s my finest creation yet!”

Celestia blushed and responded with a smile. "Hey, don’t forget my sister and I provided the necessary enchantments to make it work."

Rarity gracefully waved a hoof and replied. “Oh of course, your enchantments did help. Luna even insisted she wanted her ‘mark’ on the new diapers, that way she’d get some of the credit."

Celestia rolled her eyes as she scoffed. “Of course she did, she won the coin toss on that one.”

Rarity turned to Twilight, a bit nervous as she questioned. “But what do you think, Twilight? Are they up to your satisfaction? Will they help with your..." She coughed into a hoof. “Issue?”

Twilight blushed as she waddled over to Rarity and squealed. “I love them! They feel so comfortable and snug! I can't wait to wear them from now on, even if it’s only until this bed wetting thing stops."

The fashionista gave a sigh of relief and clapped her hooves in delight. “That's wonderful to hear, darling. That means it’s time to try out the dress!” Rarity exclaimed as she gracefully placed the dress over Twilight’s body and the mare squeaked, realizing there was some extra fabric within the dress while pushing her forehooves through the sleeves of her dress.

As Rarity pushed Twilight’s body through the inner fabric of her dress, what seemed to be a onesie around her diaper snapped itself in place, making Twilight squeak. She then turned to see the fabric did well to hide her diaper bulge as Rarity explained. “With your dress, I stitched a diaper hatch around your rump to contain the diaper quite snuggly. So even if your dress flies up unexpectedly, nopony will see the diaper.”

Twilight lifted her dress and turned her head to see the cloth looked like bulky underwear. "Well, I guess it would be easier to explain than a diaper. You did an excellent job with this dress, Rarity! I love it!”

“Thanks, darling. I appreciate the compliment! I’m so glad I could help you overcome your ‘wardrobe problem’," Rarity proclaimed, feeling so happy inside to know that Twilight loved the new dress. “Now come on, go strut yourself up on the stage!" She exclaimed as she flicked her mane in dramatic fashion.

Twilight went up and strutted back and forth while Celestia and Rarity clapped their hooves. Then Twilight came down with a smile on her face. “So, is that all?”

Rarity crossed her hooves and scoffed. “Of course not!” She promptly waddled over as she took the dress her friends had made, and placed it over her body as she strutted over with a smile on her face. “You see, I also made the same adjustment to the dress that you made for me. That way you’ll have my support at the gala if you still have to wear diapers for the evening.”

Twilight laughed as she and Rarity both strutted across the stage and Celestia asked. “How about we have another tea party just for the two of you?”

Rarity squealed in delight, bouncing up and down on her padded bottom! “Oh yes, I would love that! It’ll be just like when I played pretend as a foal.”

Twilight also thought that the idea was quite fun and responded. “Yeah, me too. I think that’s a great idea. Hopefully this time there won’t be any ‘interruptions’.”

Celestia clapped her hooves. “Wonderful! Now, why don’t we bring out the other outfits?”

Rarity giggled as Twilight blinked. “Wait, what do you mean ‘other outfits’?”

The fashionista just skipped over and brought out two frilly dresses for her and for Twilight: One was a dark violet in color while the other was a baby blue in color with a pink trim and white frills outlining the dress. “Tah dah! I spruced up that frilly dress of yours and made something for myself!”

Twilight was astounded that her dress was looking a lot cuter and a lot more foalish. “Wow! You really outdid yourself, Rarity! You even shortened the skirt?”

“Of course, darling. True foal style dresses are shorter to show off our poofy bottoms for inspections.” Rarity explained with a smile as she started to change out from her modified gala dress into the more foalish outfit.

Twilight did so as well, blushing at how much shorter the frilly dress was as it revealed her a lot of her padded behind.

Once dressed up, Rarity skipped over to her friend and hugged her as they nuzzled each other.

Celestia then came over and gave them both a pat on the head. “Alright, come on, little ones. It’s time for the tea party.” The princess then led them away from the stage and into the kitchen, with both padded unicorns waddling after her as if she was their mother.

Once the two entered the kitchen Twilight saw a plastic pink table in the kitchen with little pink chairs and blushed. “Oh my! Can’t believe that you had this all set up, Princess Celestia.”

“But of course, Twilight. For tonight I want you and Rarity to relax, and I'll take care of everything,” Celestia explained as she put Twilight down on the chair with the unicorn kicking about in her pampers. The princess then got out the little tea set like last time and blushed. “I wonder if we’ll do this often?”

Rarity waddled over and plopped down into her own seat. “I, for one, hope so, darling. I always wanted to do these more as a foal. But even as a young filly tea parties were becoming old fashioned and foals wouldn’t do them no matter what.”

Twilight sat down with a blush on her face, thinking of her own foalhood. “Even as a little filly I wouldn’t have dreamed of ever going to a tea party like this.”

“Well, Twilight, tonight we’ll be able to fulfill our fantasies!” Rarity squealed as she raised her tea cup and the two clinked them together with their magic, taking sips at the same time as Twilight responded. “Yeah. Being stuck in diapers at night has strangely turned out to be more fun than I first realized. It’s not as bad as I thought it would be.”

“Yes, darling, I agree. I think there is a certain enjoyment from being treated as a foal once again. Everypony needs a bit of pampering from time to time.” Rarity contemplated as she drank her tea and enjoyed the “little filly” atmosphere that permeated the room.

Twilight blushed, feeling a bit embarrassed as she asked. “Rarity, do you think that even after Princess Luna finishes fixing my nighttime issue, you would want to do this again?”

Rarity tapped a hoof to her chin. “Well, darling, I honestly wouldn’t mind if it was just the two of us and we didn’t have to automatically ‘use’ our diapers, but let’s keep that our little secret.”

“Of course.” Twilight whispered back as she also would rather not have anypony know about this. What would they think of her if they found out?

Just then, Celestia came by with some cookies on a platter and placed it in front of the padded ponies. “Here you go! Freshly baked and right out of the oven!”

The little fillies went about taking the cookies in their hooves and munched on them, getting cookie crumbs everywhere. It was so adorable that Celestia couldn’t help but take pictures of the two snacking on the cookies while the two continued to drink their tea.

But then Rarity placed her cup down and asked. “So Twilight, do you think that you would be comfortable to have everypony wear a diaper with our dresses? Princess Celestia seems to think it would boost your confidence, and I have to agree.”

Twilight blushed, not knowing how to answer such a question and replied. “I think that sounds fine for the gala if Luna can’t fix me in time. Though we would have to somehow convince the rest of our friends that it’s a good idea. I know the gala has bathrooms, though I don’t know how the lines usually are for them.”

Rarity tapped a hoof to her chin and responded. “Yes, darling I agree that it will be quite difficult to have our friends agree. But I think we can find some way. Perhaps those lines could be a compelling argument.”

Twilight shook her head as she responde. “No, I have to disagree! I mean if they don’t want to do it I’d rather not force them into diapers. But I do appreciate the thought.”

Rarity waved a hoof again. “It’s no problem, darling. I personally have found myself rather enjoying the feeling of a freshly powdered diaper on my rump.” She then bounced up and down on her padding, making tiny puffs of foal powder billow outward.

Twilight snickered behind a hoof unable to keep her composure at seeing how silly her friend was, behaving more like a foal by the second.

And it wasn’t long afterward that Celestia came about and lifted Twilight’s dress, prodding her pampered front. “Oh mym Twilight. Already wet, I see. I guess you were having too much fun to notice.”

The mare’s cheeks flushed pink, realising she hadn’t even noticed or heard anything and whispered. “Really? How bad is it?”

“Oh, it’s not too bad. Actually, it would be a waste of a perfectly good diaper to change you now.” Celestia cooed as she lifted Rarity’s dress and inspected her pampered rump as well.

The fahsinoista squeaked and was quite bewildered, unsure of what to do when having Princess Celestia inspect her diaper like a foal. “Hmm, seems you're good and dry, Rarity. Guess you're more of a big pony than Twilight.”

Rarity raised her head in pride making Twilight snap. “Hey! That’s not fair! She doesn’t have a bed wetting problem like I do!”

Celestia turned and ruffled Twilight’s mane. “Oh, don’t worry, sweetheart. You’ll be a big girl eventually, I’m sure.”

The purple coated unicorn grumbled, not a big fan of the teasing as she continued to sip her tea.

Rarity, on the other hoof, was enjoying it a bit and asked. “Do you think I’m old enough to use the big pony bathroom now?”

Celestia laughed as she nuzzled Rarity. “Maybe one day, sweetie. But for now I like you all padded up my little marshmallow.” She then started to tickle Rarity’s belly, making her kick and giggled as she fell down, doubling over in laughter.

“Oh Auntie Tia, stop it! You’re going t-” But it was too late as Rarity squealed, hearing a hissing sound emanating from her diaper and the stars on the seat began to fade.

Celestia smirked in spite of her better instincts. “Oh, maybe I spoke too soon about you being a big filly. Especially after an accident like that.”

Rarity pouted and snapped. “Hey! That’s not fair! You did that on purpose, it doesn’t count!”

“Does too! Only big fillies go potty in the big toilet!” Twilight teased, sticking her tongue out as she was now kind of enjoying this little dose of roleplaying.

Rarity got up and waved her mane. “Well, it was one accident, darling. You’ve been in diapers for far longer and have been wetting them every night since you started wearing them.”

“That's right, but I still think it’s too early for potty training you, my little marshmallow. I still haven’t started training little Twily yet,” Celestia cooed as she went about changing Rarity’s diaper.

Rarity kicked and shouted as the changing process began. “Hey, what do you think you’re doing?! Stop that!”

“You're super soggy. Stay still so I can clean you up before you get a rash,” Celestia cooed as she wiped the pristine white coated mare’s rump, and then taped her into a new diaper. The princess then turned to the clock. “Oh my, it's way past your bedtimes! Come on, cuties.”

Celestia then took Rarity and Twilight’s hooves and led them to the fashionista’s bedroom. The princess undressed them, and then slowly dressed the two into night blue hoofed pajamas as she zipped up the middle of both.

The two mares were surprised to see their padded rumps now snug into their pajamas. Rarity waddling over to a mirror and making some cute poses while Twilight stood there with her cheeks flushing pink anew as she looked at the thick diaper around her rump, now obvious under the dark blue fabric. “Wow, these pajamas are really snug. Who made these?”

“I did, darling! Just something to help you to make you more comfortable.” Rarity cooed as she snuggled her friend.

“Alright. Time for bed, cuties.” Celestia cooed as she lifted the two and tucked them under the sheets, before plopping two dark blue pacifiers into their mouths. The princess watched them sucking on the rubber bulbs, going up and down rhythmically. And she continued to watch the two until they were deep in slumber. Then for the final touch, she placed her baby monitor on the night stand by them.

Clestia then started to leave the room when her eyes went wide as she saw Sweetie Belle slowly trotting down the hall, yawning. “Princess Celestia, what's going on? I heard some weird stuff and I think I saw Rarity wearing a diaper. Is it true?”

The princess’s cheeks grew a deep red, unsure of what to do as she didn’t want to expose that Rarity was in fact wearing pampers. She eventually cooed. “Oh, it’s nothing, deary. Rarity’s just tired from a long day of work. Now how about we get you to sleep?”

The princess then took the filly by her hoof and led her back to her own bedroom. But as Celestia opened the door, Sweetie Belle blushed as she whispered. “Did you really put a diaper on my sister? I thought I saw something diaper shaped.”

The princess paused as that question was asked again and replied. “W..well…” Reluctantly, she decided to tell her the truth. “Ye...yes I did, but it’s just for fun and she doesn't need them. And you’re not going to say anything about it to anypony, otherwise I’ll give her permission to put you in diapers all the time and take away your bathroom privileges.”

Celestia then tucked Sweetie Belle under her covers as the filly giggled. “Okay, I’ll be quiet. But next time, if she and Twilight are having a sleepover with diapers, can I join in?”

The princess blushed, wondering how much Sweetie Belle had seen, and whispered. “Sure...next time I’ll ask them…But for now let’s keep this a secret, okay? Don’t forget that I can also have my sister give you nothing but nightmares if you tattle.”

The filly nodded and whispered. “Yeah, that’s fine. And I promise, I won’t say anything. I just thought it was really cute seeing Rarity all padded up like that.”

“Alright, well get some sleep, ok? A growing filly like you needs plenty of bed rest.” The princess whispered and nuzzled the little filly, waiting for her to fall asleep too, wondering how Rarity would take the news that Sweetie Belle had seen her big sister in diapers. “Well, I guess I can tell Rarity in the morning. Hopefully she won’t start wetting the bed too, although I wouldn’t mind mothering her if she did.” She thought to herself.