Celestia's Foalhood

“Bye-bye, Lulu!” Celestia chirped while she waved, for more energetic than a few moments prior, as she wanted to give her sister the friendliest exit possible.

Luna cast an amused, yet happy glance back at her sister as she flapped her wings and took to the skies, flying off while the other alicorn watched with a smile befitting her foalish nature. Fluttershy, however, looked at the solar princess in a manner more akin to appreciation than worry, considering whether she preferred this version of Celestia over the previous one. She was snapped out of her stupor, though, when the alicorn looked back at her, fear plastered across her face.

“Are you sure I’m alright, Fluttershy?” The white mare asked, looking up at her foalsitter.

“Yes, I’m sure,” The pegasus comfortingly replied. “Wetting yourself is somewhat normal for somepony like you, but we will need to clean it.”

“Oh, okay...” The alicorn responded as she calmed down, then continued to look at the other pony when she noticed her staring. She bit her lip and hesitantly added, “So, are we going to do that, or...”

Fluttershy shook her head to clear her senses before blushing a little and replying, “Um, yes, sorry.” She next turned around and walked to the stairs and added, “Follow me.”

Celestia gingerly trotted over to the stairs and followed her foalsitter up them. “Did you wet yourself too?” The princess asked after a moment, watching the other mare as she froze.

“Um, n-no,” The shy pegasus stuttered.

“Really? You look wet in the same place I am,” The alabaster mare responded, looking at the liquid trickling down the inside of her foalsitter’s hind legs.

Fluttershy paused for a second before taking a front hoof and slowly moving it to her sex, then lightly pressed against it, finding it to be rather damp and leaky. Her face turned crimson red as she put her foreleg back in front of her and shamefully replied, “Um... I guess I did...” She started moving again, the other pony continuing to follow her, and added, “I suppose I’ll have to clean myself as well...”

“Oh no, I need to be really careful about this...” The pegasus though to herself as both ponies continued in silence.

When the pair made their way into the bathroom, the larger mare closed the door before walking up to the bathtub and turning the faucet on. The humidity and heat emanating from the water that then came out didn’t curtail the arousal the yellow pony was getting from being near the foal-ized solar princess, however.

While the prospect of being sexually intimate with Princess Celestia at all was very enticing, and having the alicorn be in complete submission to you was enough to drive most ponies up the wall with lust, what turned Fluttershy on the most was the fact that the pony was a foal. She didn’t know why, but the idea of having sex with a foal drove her mad with lust, well at least as mad as someone so quiet and peaceful as her could be. It may have had something to do with how innocent they are, their curiosity and spirit making it so easy to get your way with them, or maybe it was their size, being able to completely surround and dominate them, pressing yourself against their tiny sex and hearing their cute little moans as they writhed and batted their legs in an utterly adorable fashion that could never hope to be replicated by anypony larger or with more experience.

She was beyond thankful to have a new foal to take care of, but was also rather scared at the prospect of somepony finding about her fetish, goodness knows what would happen because of that, and especially because the effects of it all were increased a myriad-fold because the foal in question was Princess Celestia. Anypony finding out that she abused the alicorn’s mentally ineffectual state for her own sexual gratification would likely to try to crucify her, but at the same time, being able to do so to a Princess of Equestria, the Solar Goddess, she who’s name is said in vain, with little to no repercussions on her part was so unimaginably hot that she couldn’t not do it.

She was pulled out of her thoughts however when the aforementioned princess shouted at her. “Fluttershy!”

“Eep!” The timid pegasus jumped away from the other mare slightly in response, before looking at her while internally trying to calm herself from the scare and sexual high she just had. “Y-yes, Celestia?” She eventually stuttered out.

“Um, I think the bath’s ready,” Celestia replied, leading both mares to look over at the bathtub, which now looked to be nearly full.

“O-oh, right,” Fluttershy replied while she turned the faucet off. “Thank you,” She added, only looking back at the other pony though the corner of her eye as to now hide the massive scarlet blush covering her cheeks.

The miniaturized alicorn next reached up her forelegs to the rim of the bathtub, which was only slightly below her muzzle at the moment. The other mare watched her while she heaved her body up and over the rim, before falling into the water with a small splash. She got to her hooves, only her head being above the surface of the water, and looked expectantly at her caretaker, leading the pegasus to enter the tub in a similar, but slower manner to the foal.

The yellow mare grabbed one of the shampoo bottles and sprayed some of its contents onto a hoof, then put the bottle back in its place before approaching the other pony, who was now sitting down with her eyes closed and splashing the water around with her forehooves. She quickly stopped her movements when she felt a pair of hooves press against her side and start to rub some shampoo into her fur. She let the hooves slowly begin to roam around her body, going from her sides, across her back, up her front and neck, and took a while on her head, letting the kind mare bask in the utterly adorable ‘mrr’s that came from it.

After a while, Fluttershy lightly pressed the alicorn’s shoulders to get her to move back and lean against the wall behind her, then began working on her barrel which was mostly underwater. The little pony let out small gasps from the belly rub, which became more frequent and pleasant-sounding the further down she was rubbed, eventually turning into quiet moaning when her pussy started to get touched. The moans were like music to the larger mare’s ears, reminding her just why she loved foals much more than strictly appropriate, and the pleasure she heard behind them relinquished any doubts she had on the matter.

She continued pressing her hooves into Celestia’s sex, and grinned with glee while she heard the princess’s pleasured whimpers. Her grin became even bigger when she looked up to the white mare’s face and saw her utterly lost in the sexual sensations, occasionally biting her lip to stifle the coos involuntary flowing from her mouth. Once again, the mix of cuteness and sensuality completely addled the pegasus’s mind, drowning her perception of anything but the filly she found so lovely.

“Ah, Fl-Fluttersh-shyy...” The alicorn moaned, drawing the other pony’s attention to her words. “W-what are y-you doiiiing~?”

“Ah-, well,” She took a moment to think of an appropriate response, “I-I’m just washing your vagina...” She explained, trying to keep calm through easily the most arousing thing she has done in her life.

Celestia let loose a few more ragged pants before replying, “W-why does it feel like tha-aaat!?”

“U-um, well... it just does whenever your v-vagina gets rubbed,” Fluttershy responded while slowing her movements partially. “Um, do you want me to stop?” She asked, but was already pretty sure she knew the answer.

“N-no!” The white filly shouted. “It feels reeaahally gooooood!! D-don’t stop!!” She moaned as she was pushed closer to orgasm.

“Oh, okay,” The other pony replied quietly, hiding her thrill at the foal’s words and moans that was shown through her wide, yet determined eyes. She quickened her rubbing and begun focusing one of her hooves on the now-exposed clit of the alicorn while the other angled somewhat, pressing an edge slightly into the slit while it continued running along the labia.

Celestia’s moans turned into screams as she came, writhing in pleasure while her pussy sprayed its juices into the bathwater, the ministrations of her foalsitter not faltering in the slightest. The actions continued for a while, time losing its meaning for the mares from how enthralled they were by it. It did eventually end, however, the filly slowly coming down from her sexual high to pant from exhaustion while the other pony stopped her rubbing.

Fluttershy then let the alicorn rest while she looked on in disbelieving glee, wondering how she managed to end up in this situation. What celestial beings must have blessed her for her to receive personal responsibility for a foal-ized Princess Celestia she did not know, but was certainly never going to turn down such an offer.

Eventually the alicorn managed to regain enough of her breath to ask, “What... was that?”

The other mare blinked out of her stupour before meekly replying, “Um, that was an orgasm...”

“Okay...” The filly responded, not sounding like she fully understood what that meant. “So, are we done with the bath now?”

“Um,” Fluttershy started, “Yes. Let’s just get out and dry off.” She stood up and exited the bath, and, noticing the other mare to be still leaning against the wall, picked her up with her forehooves and laid her down on the tile floor. She next pulled the plug on the bath drain before picking up a towel off of one of the racks on the wall, and dried herself with it.

She hardly paid attentions to her actions while she stared at the exhausted Celestia, her forelegs folded above her barrel in an adorable manner while her hind legs and tail were splayed out, leaving her sex completely uncovered. When the pegasus managed to dry herself off, she tossed the towel into a laundry bin near the door and got another towel before approaching the filly, picking her up, and surrounding her with the towel.

The pegasus next rubbed all over the cocooned pony, drying her off and enjoying the cute giggling that came from her motions. She went on for somewhat longer than necessary to draw out the bliss, but eventually ended it, unwrapping the blanket from the foal and tossing it into the bin.

“Um, are you alright?” Fluttershy asked when she looked back at the alicorn.

“Really... tired...” Celestia replied, her eyelid drooping every few seconds from exhaustion.

“Oh, do you want me to bring you to bed?” The primrose pony responded, to which the other mare merely nodded. She picked up the filly and set her on her back before opening the door and heading out of the now rather humid room, then went into the bedroom and set her down on the bed. She quickly repositioned the foal to be laying on her back and tucked her under the covers, but upon seeing the purple and maroon light of dusk coming in through the windows, she got under the covers as well.

“Good night ‘Tia,” The pegasus said as she wrapped her forelegs around the filly, hugging her while she lovingly looked into the filly’s tired magenta eyes.

“Mhm,” The white pony responded before tilting her head down to press her face into her foalsitter’s soft barrel, weakly returning the hug while both ponies drifted off to sleep.