Author's Note

Well, since Coco is the only one who got any votes this time around, she obviously got to be the star for this chapter.

Once again, Scootabom1 provided the ideas for what to do with Coco: First suggesting that she and Twilight wear cute outfits and hunt for colored eggs together, then suggesting that she be slightly regressed and have a stuffed animal of her own that got a tear. In that regard, I drew on inspiration from Toy Story 2 and how Woody got his arm ripped. Tiber Septim II suggested having Twilight get sleep paralysis that would lead to Princess Celestia sleeping with her every night, but I decided against it specifically because I still want to give myself an off ramp whenever I decide this fic has run its course.

Once again, I drew on inspiration from "Potty Training Tales", this time with Coco's prompt. But only in regard to her family and her connection to Charity Kindheart. As far as I know, it's the only time there's been any elaboration on Coco's past.

Characters ineligable under any circumstances:
Starlight Glimmer
Discord
Trixie
Sunburst
Cutie Mark Crusaders
Flurry Heart
School aged or younger children (i.e. Cake Twins)
Characters introduced after Flurry Heart (Starswirl the Bearded, the Pillars, Star Tracker, Mudbriar, etc.)
Equestria Girls characters other than Sunset Shimmer/the Dazzlings

Characters that can only be done in group pairings:
Mane six
Spike
Princess Cadence
Shining Armor
Princess Luna
Octavia and Vinyl Scratch
Twilight Velvet
Spitfire (with or without Wonderbolts)
Lightning Dust
Maud Pie (without Mudbriar)
Moondancer
Cheerilee
Lyra and Bon Bon (separately, or together)
Coco

Characters previously voted on:
Derpy - One vote
Spike and Shining Armor (Together) - One vote
Limestone Pie, Marble Pie, Sassy Saddles, Fleur - One half vote

Coco (Coco Pommel)

Princess Celestia gently nudged the sleeping form of her fellow alicorn, who was currently sound asleep in nothing but a diaper. She had a very big surprise (well, okay, maybe not that big a surprise) that she wanted to give to Twilight, and she could do that if the padded princess was woken up.

Twilight twitched and rolled a little, moving from side to side on her bed. But she did not awaken, she continued to slumber on.

Celestia sweetly, motherly called out to Twilight. "Twily, it's time to wake up."

Still, Twilight wouldn't budge. She was apparently in a very deep sleep. There seemed to be no signs of distress coming from her, but it looked like she was fighting any attempts to get her to wake up.

The sun princess started to frown ever so slightly. She very well couldn't let Twilight keep on sleeping like this, the padded alicorn would sleep through the whole day at this rate. "Twily, please, you have to wake up!" She said much more sternly. "Come on."

A groan escaped Twilight's lips as she seemed to obey ever so hesitantly. She yawned, her eyes slowly fluttering open as she moved to sit up, all the while her diaper crinkled audibly underneath her. "Mommy, why did you have to wake me up?" She asked, rubbing a hoof over her sleepy eyes. "I was having the most wonderful dream. I was with my friends, and we were all having a playdate and sleepover together."

Princess Celestia smiled sweetly. "I'm sorry, Twily. But you've been asleep for almost half the day now. Much as I want you to get your beauty sleep, I can't let you sleep all day long. After all, that wouldn't be very fair to the pony I specifically asked to be here today."

"Oh boy, another playmate!" Smarty Pants happily chirped. "Who do you think it's going to be this time, Twily?"

The young alicorn yawned a bit more, wiping the last of the sleep from her eyes. "I don't know, Smarty Pants. Mommy doesn't tell me about these things. She just schedules these playdates whenever she finds time."

Celestia nodded. "Because I want it to be a surprise. Plus, this particular pony was rather shy about coming here, especially when I told her it would involve diapers. But give credit where credit is due, she didn't back out."

Twilight blinked in surprise and confusion. "Did you get Fluttershy to come here, Mommy? She already knows about my secret, why would she be shy about doing it all again?"

The sun princess chuckled. "It's not Fluttershy, Twily. For one thing, this pony comes from Manehattan of all places. And she's an earth pony, not a pegasus," She then turned her head and her attention towards the bedroom door, sweetly calling out. "It's alright, you can come in now. There's no need to be shy, Twily's in diapers too."

A sweet, gentle, innocent sounding voice softly whimpered in reply. "Y-you sure, princess? I... wouldn't want to be a burden." Yet within seconds, in waddled a whitish-yellow coated earth pony mare of maybe slightly smaller than normal build. She had innocent light cyan eyes and a two toned light greenish gray mane and tail. More noticeably, she had a cream colored onesie and matching suit that almost looked like a pair of hoofied pajamas, yet they did little to conceal the obvious diaper shaped bulge sticking out of the back.

Twilight's eyes went wide and a gasp escaped her lips! She recognized the earth pony at once. "Coco?" She asked as she leaped down from her bed and waddled over.

"Um... y-yes," Coco stuttered and shrank a bit from the princess' gaze. "P-please, don't be mad. I... didn't mean to find out about your secret. It's just that..." She whimpered and blushed. "Rarity started forwarding some very 'strange' dress designs through her boutiques, but she wouldn't say why. I just started noticing how they were kind of meant for a pony of your size, and how they all involved space for diapers. It wasn't hard to put two and two together. But I never told anypony, not even Rarity!"

Twilight happily hugged the onesie wearing earth pony. "Oh, it's okay, Coco! Rarity already knows. Still, thanks for keeping my secret a secret," She giggled and swished her tail. "Even if it's not that much of a secret now. Lots of ponies know about it, thanks to my mommy."

Coco Pommel blushed further. "H-how is the princess your 'mommy'? Is it like playing a role in some kind of show? Like one of those Bridleway musicals?"

"Duh, of course it's like that," Smarty Pants spoke up (even though it was obvious to Coco that it was really Twilight speaking through the doll). "Didn't you ever like to play pretend or dress up when you were a foal?"

Coco nodded ever so slowly. "Yeah, all the time. My mother and father were always big into theater, especially anything having to do with Charity Kindheart. Charity really helped me a lot when I was growing up, it was like she was an aunt to me, or a big sister I guess."

Twilight playfully giggled. "Hey, it's okay, I had a big sibling too. But it was a big brother, not a big sister."

Coco let out a sigh, looking back to her onesie. "Well, it's still kind of weird going back to diapers, especially these kinds of diapers. Growing up, my parents usually preferred the old fashioned cloth ones because they cost less than the store brand disposables. My mother was new to Manehattan, she came to the city from Trottingham after she fell in love with my dad. And he was a chariot driver."

"Ooh! Chariots?! How exciting!" The padded princess eagerly exclaimed!

The onesie wearing earth pony shyly confessed. "Not those kinds of chariots. It was just fancy talk for cabs. Father worked long hours carrying passengers up and down the busy streets. But he always found time to come home and be with me," She sighed. "He only just retired a little while ago, I haven't seen him since I moved out of the house. I really should go and see him and mother again sometime. Sometime after today, of course."

Twilight nodded. "Uh-huh, because today you're my playmate. We're gonna have so much fun together, Coco!"

Coco then cleared her throat. "Well, before we begin, there... is a little something I wanna show you. It's something I held onto in secret to remind me of my foalhood. I told myself it was more of a good luck charm than anything, but the truth is I just had a lot of memories attached to it," She reached into a small saddlebag she'd brought with her and pulled out a stuffed rabbit that had clearly seen better days. It looked just as old and beat up as Smarty Pants. "This is Floppy. She was my best friend when I was a foal. We did everything together, until Mother said I was too old to be playing with dolls and made me put her away."

"Does she talk?" Smarty Pants asked as she waved a hoof in front of the stuffed rabbit.

The shy earth pony mare nervously replied. "She's really more of a listener, like me," She let out a whimper. "Sorry if I'm not very good at this. It's not like I don't want to pretend to be a foal again, I have fond memories of my time in diapers. I'm just a little uncomfortable about it all, and I wish I knew why."

The padded alicorn happily beamed. "Hey, it's okay. You can learn from me. You'll see that being a foal again can be the best thing ever! Ever since I started doing this with Smarty Pants and Mommy, I've had the time of my life! And I bet you'll be the same."

Princess Celestia then chimed in with a proposal of her own. "If it helps, I'd be happy to grant you any one thing your heart desires, Coco. As many of Twily's playmates can attest, I'm quite good at making dreams come true. All I ask in return is that you not tell anypony about Twily's secret who isn't already in the know."

At that, Coco trotted forward and somewhat hesitantly asked. "Then maybe you could... regress me a little, just in mind? I think it would be easier if I had more of a foal's mindset. It wouldn't have to be anything heavy, and I'd like it to be temporary."

Celestia nodded, lighting up her horn. "If you're sure that's what you want, Coco. Hold still, please." She then gently brought her glowing horn close to Coco's forehead. There was a sudden, bright flash!

When the flash faded, Coco appeared to be no different from how she currently was. She was just standing there, blinking slowly and staring straight ahead.

Twilight eyed Coco with concern, waiting to see if she would say or do anything. When a minute passed without any sort of reaction from the onesie wearing earth pony, the padded princess approached her and asked. "Coco, are you okay? Are you feeling different at all?"

The shy earth pony mare was silent for a bit, before her lips curled into a small smile. "I feew fine," She spoke, a noticeable lisp presenting itself. "Sowwy, I'm stiww a wittwe shy."

The diapered alicorn wasn't bothered in the slightest by this statement. "Hey, that's okay. You'll get used to your role eventually."

"And we're gonna have so much fun together!" Smarty Pants proclaimed! "You can even invite Floppy to be part of the fun too! Who wouldn't like that?!"

Coco babbled. "No one," She turned to the stuffed rabbit. "Hey, Fwoppy, guess what? We've been invited to pway with Twiwy and Smawty Pants."

Floppy began to speak in a noticeably squeaky tone of voice. "Sounds wike fun! We get to pway with a pwincess."

"Uh-huh," Twilight giggled. "And Princess Celestia is our mommy! She's the bestest mommy ever!"

Princess Celestia beamed with pride. "Oh, Twily, I never get tired of hearing you say that."

"Oh, but I mean it, Mommy," The padded princess proudly proclaimed. "You really are the best mommy ever! You always know just what to say or what to do to make me feel better. And you keep finding so many friends for me to play with. I couldn't ask for a better mommy if I tried."

Celestia smiled sweetly. "I'm flattered you think so highly of me, Twily. You've always been like a daughter to me, and this way we can make that bond more official," She quickly recovered and cleared her throat. "So, my little ponies, what would you like to do first? I have something special planned, but I want to wait until later in the day when it's not so hot out. Plus, I still need to wait and get the all clear from my guards."

Coco and Floppy turned to Twilight and Smarty Pants, asking the two. "What do you wanna pway?"

Twilight Sparkle put a hoof to her chin, deep in thought. She wasn't used to taking the lead with her playmates, she was usually content to let them set the tone and pace for her playdates. She thought, and thought, and thought some more. Then it came to her all of a sudden! "I know," She excitedly proclaimed. "Floppy and Smarty Pants can play together, like friends or a team."

"Oh, do be cawefuw with Fwoppy." Coco shyly whimpered.

Floppy added. "Yeah, I bwuise easiwy. I not wike you, Smawty Pants, I can't take a wot of punishment."

"Don't worry," Smarty Pants reassured the stuffed rabbit. "We'll be careful, I promise. Twily's a lot more gentle with me now than she used to be."

Twilight nodded. "Uh-huh," Then she looked around as another idea came to her. "I think I know what Smarty Pants and Floppy can do together," She then frowned. "But we'll need some more plushies to be able to do it."

Princess Celestia was quick to reply. "Oh, is that at all, Twily? You know you can always ask me for help," She quickly lit up her horn again, soon summoning two very familiar looking (at least to Twilight) plushies: One being a stuffed turtle and the other being a giant, stuffed snail. "Recognize these, Twily?"

The padded princess' mouth nearly dropped open in shock and surprise! "Mommy, you borrowed Brutus Force and Whammy?"

The sun princess playfully reassured her charge. "No, I just made copies of them. Shining and Cadence were more than happy to let me do it, and Flurry Heart took only slightly more convincing," She then encouraged as she stood up. "Now go ahead, get all set up."

"Where are you going, Mommy?" Twilight asked her fellow alicorn.

"To the bathroom," The elder alicorn explained. "After all, mommies and daddies go potty too. Just remember that you and Coco are to stay in this room, no wandering off." And she trotted away, leaving the two padded ponies alone.

Princess Celestia returned a short time later, and she was utterly astounded by the incredible display that her charges had managed to set up during her absence!

Smarty Pants was nowhere to be seen, but Floppy was standing at one end of the room next to a large box. Whammy was wearing a hat that was made to loosely resemble a royal guard captain's helmet, and stood on a bucket of some kind. Directly beneath the snail plushie was a bunch of miniature royal guard figures. Brutus Force, meanwhile, was dangling on a rope, swinging back and forth between a toy shark and some stuffed, miniature parasprites.

"Help! Help! Somepony save me, please!" Brutus Force called out in a noticeably high pitched, feminine sounding tone of voice.

"Let Bwutus Fwoce go, Whammy!" Floppy demanded of the stuffed snail.

The stuffed snail just replied in an exaggerated, gruff sounding voice. "That's Dr. Whammer to you, Floppy! Now you must choose: How shall Brutus Force die? What should be his fate: Eaten by sharks?" Brutus Force briefly hovered over the toy shark. "Or death by rabid parasprite?!" Brutus Force then hovered over the parasprites as they buzzed ominously beneath him.

Floppy was silent and said nothing, weighing her options.

Whammy then laid bare her demand. "Choose, and choose now!"

But Floppy turned to the box and shouted! "I choose you: Smawty Pants!" And mere seconds after she said that, the box was thrown open, and out burst Smarty Pants!

This unexpected decision took Whammy by surprise, prompting her to exclaim! "What?! That's not a choice!" But it was the last thing she said before she was knocked over by Smarty Pants, who was wearing a cape and flying through the air!

Brutus Force was quickly snatched up by the toy donkey, freed from the rope, and brought to safety. "Thank you, Smarty Pants! You're my hero!" Brutus Force dramatically exclaimed!

Floppy, meanwhile, waited for the two plushies to return to her. Then she approached Smarty Pants and greeted her warmly. "You did it, Smawty Pants! You saved the day!"

Smarty Pants happily grabbed Floppy by one arm, pulling her close. "No problem, Floppy. All in a day's work for the two bestest buds in the history of forever!" But a second or two later, there came a faintly audibly ripping sound. Suddenly, a large gash appeared on the arm of Floppy that had been grabbed! It looked as if cotton was about to spill out of the stuffed rabbit.

When Coco saw the tear, she immediately began to whimper and tear up! "Fwoppy!" She cried in distress!

Twilight was stricken with horror and hastily tried to apologize. "I'm sorry, Coco! I didn't mean to! It was an accident, I swear!"

Princess Celestia immediately came trotting up on the scene, quickly moving to calm the crying Coco down. "There there, Coco. It's alright. I can fix it," She gently picked up Floppy with a hoof, eyeing her closely. "Of course, it will take a while."

"But... but... I need Fwoppy! She's my bestest fwiend!" The onesie wearing earth pony pleaded, her eyes already stained red from the tears.

Twilight, thinking quickly, waddled over to Coco and hoofed her Smarty Pants. "You can borrow Smarty Pants for a while, I don't really need her."

Coco was surprised by the act of kindness. "Y-you suwe, Twiwy?"

Smarty Pants spoke up. "It's okay. I had to spend almost a year apart from Twily after she used me to try to create a friendship problem. At least with you I know I won't end up being a chew toy for a farm dog," When Coco shot the stuffed donkey a side glance, Smarty Pants added. "It's a long story." And to her great relief, Coco didn't ask for more details as she instead took hold of the stuffed donkey and held her close.

The sun princess smiled. "I'm very proud of you for giving up Smarty Pants like that, Twily. That was a very nice thing to do."

Twilight beamed with pride, appearing to be only slightly exaggerated. "I knew it would make you happy, Mommy. Plus, that way, Coco has someone to keep her company until you fix Floppy."

The elder alicorn nodded back. "Well, perhaps I can reward you for it somehow. Give me some time to think about it," Then she turned her attention to Floppy, "But for now, I've got a stuffed animal to fix up. So you and Coco go play, and I'll bring Floppy back as soon as she's good as new, I promise."

Princess Celestia was as good as her word. She took the well worn stuffed rabbit into another room, confident that Twilight and Coco would stay out of trouble in Twilight's bedroom until she got back.

As the sun princess set to work on fixing up the rabbit plushie, threading a needle through the worn fabric to mend the seam, she started thinking about that proposal she had made to Twilight. What could she offer to her charge when she'd already given her so much as it already was? Plus, she still had to consider that nagging concern in the back of her mind that had first been raised with Luna. Sure, it had been a long while since that concern had first been raised. But there were still those fleeting moments here and there that brought them back into the forefront of the alicorn with a majestic white coat's mind.

She quickly pushed those thoughts and concerns to the back of her mind. If it wasn't an immediate problem and Luna wasn't bringing it up to her even in passing, then she didn't see what there was to worry about. She made a mental note to have another talk with her sister though, just in case Luna had noticed something that Celestia herself hadn't.

A short time later, Celestia had fully repaired Floppy and teleported back to Twilight's bedroom. To her delight, she witnessed Twilight and Coco taking turns putting various small sheets on Smarty Pants, pretending that they were different sorts of clothes.

The elder alicorn mare cleared her throat, alerting both of her charges to her presence. She then held out the fixed up Floppy, and watched as Coco happily waddled over to claim it once again! "Fwoppy!" She hugged the stuffed rabbit tightly! "Oh thank you, Mommy! You fixed Fwoppy! She's good as new now, wight?"

Princess Celestia nodded ever so slowly. "Indeed she is. Hopefully, she won't tear again so easily. But just to be safe, try not to play so rough with her."

The onesie wearing earth pony mare happily nodded back. "Okay, I wiww."

The sun princess smiled, watching as Twilight took back possession of Smarty Pants as a result of the repairs to Floppy. She then decided that now was the perfect time to perform an unannounced diaper inspection. She started first with Twilight, seeing as the padded alicorn's diaper was easier to inspect.

"Mommy, why are you checking me?" Twilight asked in apparent surprise. "I didn't have an accident."

"Never hurts to be sure, Twily," Celestia cooed in a motherly tone as she pulled the padding back and examined it very thoroughly. "Foals don't always know when they have to go, even when they're in potty training," But sure enough, she saw that the padding was still spotless: No stains, no stenches, no damp patches. "Seems you're dry for now, Twily. Just remember to tell me if you think you have to go, okay?"

The padded princess nodded. "Uh-huh, I remember, Mommy."

Princess Celestia then trotted over to Coco, using her magic to pull down the cream colored onesie. "How about you, little Coco? How's your diaper holding up?"

Sheepishly, the padded earth pony stuttered. "W-weww, I-I..."

But once the diaper was pulled back for an inspection, there was no need for Coco Pommel to have said anything. The visible damp patches that had been hidden by her onesie were now there for all to see. There weren't that many of them, but they were still there and stood out in bold detail.

Celestia just flashed a motherly smile, taking hold of the earth pony mare with her magic. "It's alright, a foal's bladder can be unpredictable sometimes. This is why foals should always have a mommy or daddy," She floated Coco through the air. "Let's get you changed into a clean diaper-wiaper before you get a rash."

Quick as a flash, Coco's old, damp diaper was pulled off her, balled up, and tossed into a diaper pail for disposal later. Then, several wet wipes worked their magic on her flanks, removing all traces of her accident. Finally, a clean diaper was taped to her rump, and a generous helping of foal powder was sprinkled in. The scent of cornstarch tickled Coco's nostrils and made her sneeze ever so faintly.

"Thank you fow cweaning me up, Mommy," Coco said afterward as she was lifted off the changing table. "Sowwy I didn't teww you I went potty."

The sun princess cooed and reassured her charge. "Oh it's quite alright, you couldn't help it. When you gotta go, you gotta go. That's why you're wearing a diaper."

Coco still vowed. "I pwomise I'ww teww you next time I tink I have to go. I gotta twy to be a big pony wike Twiwwy."

Princess Celestia gently padded Coco on the forehead. "You do whatever makes you feel most comfortable, Coco. If it means using your diapers for a bathroom, that's fine by me. Trust me, I'm more than used to diaper changes at this point. After how many of Twily's diapers I've changed, it's practically second nature to me." Then she helped the earth pony put her cream colored onesie back on, making sure it was nice and secure.

Sometime later, the elder alicorn clapped her hooves together and called for Twilight and Coco to come over to her. They did so without hesitation, both of them carrying their plushies with them.

"What is it, Mommy?" Twilight was the first one to ask.

Celestia sweetly said to the padded ponies. "Since it's such a nice day out, I was thinking you two should go outside and enjoy the sunshine. It's cooled down a little bit now, so it shouldn't be too hot for either of you."

But Coco whimpered and froze on the spot. "Go outside? But evewypony wiww see us in ouw diapees! Tey gonna waugh at us!"

The sun princess quickly reassured the frightened earth pony. "No they won't. You're just going to go outside into the castle courtyard. My guards have already made sure to clear it, so it'll just be the three of us together. And I've instructed them to make sure nopony tries to sneak in or take pictures. I have my best guards maintaining a security perimeter, so you'll be safe."

Coco breathed a small sigh of relief upon hearing those words. "Tank you, Mommy."

Princess Celestia nodded in reply. "It's my pleasure. Now come along, my little ponies. I think you'll quite like the fun little activity I've set up for you." And she quickly teleported them to the castle courtyard.

When Twilight and Coco took in their surroundings, they quickly noticed what appeared to be brightly colored plastic eggs off in the distance, scattered all over the length of the courtyard (even down to some being hidden in bushes).

Celestia quickly explained to the two padded ponies. "How's about a little game? I've placed colored eggs all over the courtyard, and I want you both to look for them: Every last one of them. You have until sundown to do so."

"What do we get if we win, Mommy?" Twilight asked.

The alicorn mare with a majestic white coat explained with a knowing wink and a mischievous smirk. "You'll just have to wait and see, because that's my little secret," Then she lit up her horn, bringing forth a comically oversized chest. "However, there is a catch: You're both going to have to wear costumes while you hunt for the eggs," She quickly opened it up, revealing several large animal colors in bright hues of blue, pink, and yellow. "Compliments of Rarity For You, Canterlot Carousel, and of course Carousel Boutique." She happily informed her charges.

"Oh boy! Oh boy! Oh boy!" Twilight happily exclaimed as she clapped her hooves together and shook her tail from side to side! "Isn't this exciting, Coco?! We're gonna have the bestest time together, you and I!"

"Y-yeah, suwe." Coco replied, before she and Twilight almost literally dove into the chest to pick out their costumes. It reminded Coco a lot of all the times her mother would help her pick out an outfit to wear for the day, giving her a role to play. Her father had sometimes joined in, more so when she was older. She still remembered his speeches about "fancy talk" instead of getting to "the business", and of ponies who "talk the talk" but didn't "trot the trot".

It didn't take long for Twilight and Coco to find the outfits they wanted to wear. They opted for a matching set of bunny costumes, complete with zippers and a hatch in the back to make diaper changes much easier. The only difference is that Twilight's was pink, and Coco's was bright yellow (to the point where she almost completely blended in with it).

The sun princess then instructed for the costumed ponies to begin their search. "Come back and see me any time if you need help." She sweetly reassured them.

Rather than trot through the courtyard and the lush greens, however, the two padded ponies opted to hop like they were actual rabbits. And with every bounce, their diapers crinkled ever so faintly.

The search for the colored eggs lasted for quite a while. It seemed like there was no end to how many eggs there could possibly be. Soon, Twilight and Coco were filling up a huge whickerbasket with the plastic eggs, which was only whisked away by Princess Celestia once it was filled to the brim. And still, there were more eggs to find.

Naturally, being in the costumes in the bright sunlight made the two padded ponies start to get rather warm. The heat wasn't unbearable, but it was noticeable, and they started to sweat ever so faintly as a result.

At last, Twilight and Coco found the last egg, nestled deep in one of the bushes near the fountains, and placed it into what was either their third or fourth whickerbasket (they had lost count).

"Well done, my little ponies!" Princess Celestia cooed with exaggerated praise as she watched the padded ponies come bouncing back to her. "You did such a good job! Yes you did! Yes you did!"

Twilight then excitedly asked her fellow alicorn. "So what do we win, Mommy? What's our reward?"

The sun princess snickered. "You've both won a free bath. You two worked up quite a sweat back there. Now you're all dirty and sweaty, so you need to be cleaned."

"Can it be a bubbwe bath, Mommy?" Coco sweetly asked with the most perfect pair of pleading puppy dog eyes. "Pwease?"

Try as she might, Celestia couldn't say no to such a sweet face. "Oh, very well, a bubble bath it is," She agreed. "But first, let's get you back inside and changed out of those stuffy costumes."

The bubble bath that came soon afterward was quite relaxing to both Twilight and Coco, who enjoyed splashing about in the tub whilst Princess Celestia scrubbed them clean from head to hooves.

Afterwards, the two ponies were dried off and rubbed down, then strapped up into clean, new diapers. And following some fresh, warm bottles of milk, it was time for the padded ponies to go to bed.

Princess Celestia opted to settle down next to Twilight, more so to keep an eye on Coco since she suspected the slight mental regression would be wearing off shortly.

Indeed, not long after Twilight had fallen asleep and started snoring audibly, Coco blinked and rubbed her eyes. Then, after smacking her lips, she started to speak in a normal sounding tone of voice. "Is it over, Princess Celestia?" She asked in a whisper.

Looking across to the slumbering alicorn beside her, the sun princess happily nodded. "Indeed it is, Coco. Thank you again for agreeing to all of this. You were such a fantastic playmate for Twily."

"It... was actually kind of... nice, I think," Coco confessed. "Maybe next time I won't need to have you regress me at all, and I'll be able to play the role naturally."

"Just remember," Princess Celestia cautioned. "You're not to tell anypony who doesn't already know. If you're not sure, just ask. If you tell, bad things will happen to you."

The onesie wearing earth pony firmly protested. "I'd never tell anypony! Not a soul!"

Celestia smiled, relaxing her overall posture. "Good. I had a feeling you would say that, but I just wanted to be sure," She then turned to Coco, whispering softly to her. "Are you sure you don't want me to give you anything as a reward? Isn't there something you'd like to do that you might need a little help with?"

Coco firmly shook her head from side to side in response. "No, I'm good. I'm happy with where I am and who I am right now. Life's pretty good for me."

"Well, if you're sure," The alicorn mare sweetly replied. "But if you ever should change your mind, just let me know."