Runneth Over

Celestia opened her eyes and grumbled, cursing the many lifetimes’ worth of routine that had been hard-baked into her conscious and subconscious mind. Glancing at the bed and the two figures slumbering beside her, she turned her attention to the window of the room and the dark, cloudless night sky beyond. There was nothing forcing her to raise the sun, given that Twilight had assured her that she’d be more than happy to handle it, but old habits died hard.

Without any effort whatsoever, she shunted power into her horn and caused the first rays of light to come peeking over the horizon. Getting up early didn’t bother her all that much, nor was the trivial exertion of magical energy a bother, although she did have other issues to contend with. As she momentarily debated laying back down to get a few more minutes of sleep, an ominous rumbling crept to her ears.

Her eyes instantly shot to the side and settled on what remained of her midnight snack. It wasn’t uncommon for ponies to wake up in the dead of night feeling peckish, but her ravenous appetite, paired with the foals growing within her, wouldn’t be satisfied with something as insignificant as a few cookies or a handful of chips. Swinging her legs from the bed, she pushed herself up with a grunt and stood.

As her mouth watered and sent a bead of drool creeping past her lips and down to her chin, her hunger grew. In a fit of pique, not too long after she’d finished dinner the evening prior, she’d paid a visit to a local bakery for a desert. Her trips to the pastry shop had become increasingly frequent as of late, although she felt a bit bad about her last visit to the place. Instead of ordering a pie, a selection of bite-sized confections, or a tiramisu, she’d ordered a cake - specifically a full-sized wedding cake meant to feed a party of several dozen.

She crossed to the partially devoured towering construct, sorcerously carved a chunk large enough to sate a small family, and licked her chops. Had she been in a different setting or in front of guests, she would have helped herself to a much more modest slice - however, excluding Shining and Cadance, both of whom were soundly asleep, she wasn’t among guests. Grabbing and breaking off a sizable portion of the pastry with her bare hand, she opened her maw and extended her tongue.

She couldn’t care less how unrefined it was to quite literally cram a fistful of cake into her muzzle, but the taste more than made up for her unbecoming behavior. With crumbs and dollops of frosting falling from her hand, she peered downward, slowly chewed, and swallowed her Princess-sized bite. While she wasn’t one to make excuses, there was a darn good reason why she was ingloriously wolfing down pastry - several in fact.

Her bosoms had gotten large by any metric throughout her first pregnancy, yet they’d grown to a size that she could only describe as utterly absurd over the last three months. Being roughly the size of two small wrecking balls, her behemoth breasts had gotten so large that the view of the floor and anything directly beneath her was utterly blocked from her sight - to make matters worse, her belly, now distended to the point where it nearly graced the floor when she stood, no longer acted as a comfy shelf for her rack.

Many mares would have complained about being pregnant, bemoaning the added weight, sore feet, wild cravings, or some combination of the three - luckily for her, either due to serendipity or her predilection for motherhood, she was immune to most onerous elements of being insanely gravid. Other than her appetite spiking beyond what she previously could even consider possible and slow burn of her loins wanting to be ravished at all times, she couldn’t complain much. Snatching up another handful of cake with one hand, she ponderously turned, scratched her bare tush, and lumbered to the bathroom.

While her tits swayed and jostled from side to side, pouring pints worth of milk over her stomach, down her trunk-like legs, and to the floor beneath her, her attention drifted over to the vanity she passed. She didn’t like to brag, and she certainly wouldn’t do so in front of anypony other than her duo of lovers, but she looked good - darn good, if she did say so herself. The soft, yielding flesh of her thighs, upper arms, and monumental ass paired wondrously with her expansive chest and belly. Though she was the Princess of the Sun, she could easily pass for a Goddess of Motherhood.

Cramming yet another massive chunk of cake into her maw, she turned her back to her reflection, reached one hand back, and caressed her tush as the corners of her frosting-streaked lips turned up. “Still got it…”

There was nothing wrong with being proud of one’s looks - of course, she wasn’t the only pony who appreciated how stunning she’d become. Between Shining’s routine advances and Cadance’s flattery, she’d never felt better about herself - that plus catching guards, townsponies, and random visitors to the Crystal Castle eyeing her was thrilling. Just the other day, she’d caught a platoon Shiny had been instructing trying desperately to focus on him despite her ponderously walking in front of their formation. She grinned at the thought of that full platoon flushing crimson and all at full salute - that was until an angry guuuuurgle from her belly shook her from her thoughts.

She sighed and rubbed her tum, feeling an aching emptiness deep in her gut. Shiny and Cadence typically wouldn’t wake for another hour, so it was on her to go get something to tide herself over. Her gaze turned back to the cake on the nightstand and she sighed; if her foals were demanding she fill herself, then she would for their sake. Already she felt saliva fill her mouth just looking at the confection.

“Well buck it.” she whispered, grabbing the entire remaining cake in her magic and floating it over to herself.

It was only when it was moved next her did she catch a glance in the mirror and smirk. Had it been six months ago, she could have fit inside a cake this size herself and jumped out, nipple tassels included. Now? She grinned and gripped the massive confection in her magic, pulling it into a cylinder and watching it grow and grow in height as she shaped it thinner and thinner. Celestia stopped when it was about fifty feet long and about as wide as her fist, feeling her stomach rumble and churn in anticipation of the impending treat. She paused for a moment, turning to look back at the bed, Shiny asleep and spooning Cadence, whose womb spilled off the edge and onto the floor, rising higher than the two of them.

Cadance’s budding maternity rivaled her own. With a big, foal-filled belly and tits large enough to make coming and going through doorways a trial, she snoozed alongside her husband - not like you could easily tell though. Just a single one of her tits was expansive enough to almost entirely smother Shining and leave only his lower legs and a tuft of his azure mane peeking out from beneath the great, pillowy mound of flesh. Turning back to her creation and quietly giggling to herself, Celestia had a spark of inspiration.

Concentrating her magic, she molded the cylinder of pastry into a rough approximation of Shiny’s dick. Taking extra care to add a flare to the end, a fat medial ring and some generous, head-sized testicles, she turned back to the mirror and lovingly opened her mouth. As she slowly and gently pushed her creation forward, the now delightfully phallic cake slid to the back of her throat. Sadly, the naughty dessert wasn’t as warm or as rigid as the real thing, but she made due as she pushed it deeper and deeper down her maw.

Even more intoxicating than the feeling of being filled and stretched was her reflection. Her throat bulged around Shiny’s behemoth tool as she forced him deeper and deeper down her gullet. She forced herself to relax as the confection forced its way into her stomach proper, being constricted slightly and threatening to back up in the opening as she slid more and more into herself. Finally she felt it drop into her stomach itself and picked up the pace, the approximate marital aid moving down her maw and inside her at a brisk pace. Seemingly in a trance watching her creation disappear into herself at frightening speed, Celestia was surprised when the cakey nuts booped against her snout.

She paused to try and savor the moment, but her concentration slipped for just a moment. The shaft disappearing in her throat broke at the base and continued its slide into her guts as she found herself staring at a set of testicles that if were real, she’d desperately want her stud to have. The idea of something so heavy and full could exist lit a fire deep within her loins, a need that she’d probably have to take care of here soon. Moaning into the cakey nuts she yawned her mouth wide and did her best to take them, feeling them spill out past her cheeks and then break, landing on her bosom.

Someday she’d have to ensorcell Shiny to see just how much dick she could take, but until then, she’d gladly make due with what his admittedly exceedingly generous stallionhood offered. Scooping up the dropped cake off herself, she crammed it into her mouth and brought up one of her breasts to her mouth with her magic to wash down her binge. Her belly still hungered, but not as urgently despite the literal hundreds of pounds of confection crammed inside. Basically blind due to the size of her massive boob and straining to fit her head-size nipple in her maw, she greedily gulped down gallons of her own cream. Continuing into the bathroom, she called upon her magic to set the water in the shower running.

Their bathroom had, for the second time in the last two decades, undergone a transformation of its own. Hosting a trio of sinks, a commode that could accommodate the weight of a full-grown dragon, and a disused scale, the lavatory had been remodeled to comfortably house herself, Cadance, and their little stud muffin of a Prince - still, the crown jewel of the washroom had to be the shower. Big enough to accommodate two teams of buckball players, and tiled on four sides with the fourth being a massive sliding glass door, the shower was incredible. The floor was level with the door for about a third the length, and then descended into a deep well studded with yet more jets, allowing the princesses to comfortably bathe even at their suspected massive sizes yet to come.

Stepping in and beneath the multiple nozzles spraying hot water to the tile under her, she closed her eyes and contentedly sighed. There was a good reason why ponies said the simpler things in life were often the best. Something as innocuous as washing one’s self up was a pleasant and refreshing way to start the day - at least she thought so.

She shuffled over and extended a hand to blindly feel for the shelf holding the soap, shampoo, and conditioner. Shining and Cadance hadn’t needed to go the extra mile for her, seeing as how Cadance was slightly smaller than herself, yet they’d done so without the slightest bit of hesitation. After grabbing what she hoped was the right bottle, she lifted her head and turned it to the nearest stream of water to dampen her mane.

Not that it particularly mattered, but it was a good thing that the tile underfoot was white. Between the amounts of foal-batter Shining had spilled and the nigh-perpetual gush of milk she Cadance produced, any of the cleaning staff would have had a clear indication of just how dirty the shower could really get. As she ran her hands down her neck and over shoulders, lathering herself as she went, she suppressed a chuckle when her digits glided over her areola.

She looked good, she felt good, and there wasn’t a darn thing wrong with enjoying herself before anypony else got up, so she did just that. Straining forward and grabbing one nipple in each hand, she stroked the twin buds of flesh and sent jets of milk spraying over the wall. It was a good thing that Cadance had procured that industrial milking machine, even if she was coy about how she’d stumbled on it, because she could easily outmatch a dairy cow’s output at this point, if not most of the farm.

Keeping one hand on her left tit to knead and coax more milk from herself, she reached down her side. Getting herself off wasn’t as easy as it used to be, what with just how cumbersome her body had become, although that didn’t stop her from rubbing one out the old fashioned way - sure, she could use her magic for a bit of relief, but that simply wasn’t the same as feeling her engorged clit against her fingertips.

A soft, throaty moan crept past her lips as she caressed the plump mound of her winking marehood. Even without the water cascading over her, she was wet enough to let her have a bit of fun. Shuffling back and bracing her hand against the wall, she bent forward and allowed her belly and tits to hang heavily toward the floor, each breath causing her stomach to gently press against the floor. Only the fact that her gut extended forward and down the stairs to the well gave her the room she needed,leaning forward like this easily wouldn’t have been possible on flat ground.

Though she couldn’t see herself, she could easily picture how she must have looked. Leaned over, panting heavily and fingering herself while milk spilled from her breasts - honestly, it must have been quite the sight. The tit she was holding was so ample and soft that she genuinely struggled to hold it up as she twisted her nipple, but the lewd spectacle she was making only heightened her arousal.

As she awkwardly tried to cram a trio of digits into her winking pussy, only barely able to reach her entrance, she yelped and nearly fell when something smacked her backside. There were only two ponies who’d be brazen enough to interrupt her in such a way, and had every intention of finding out which of her lovers had decided to join her. She peeked over her shoulder with a wry grin, fully intent on provoking either Shining or Cadance into helping her out, yet she faltered when she noticed who was behind her.

Shamelessly rubbing her ass, Shining chuckled to himself. His naked body, covered in glistening streams of water, was the sort of thing fillies would fantasize about at night or in class, but his adonic good looks and smug expression weren’t all he had going for him. Drooping to the floor and swelling with every beat of his heart, his stallionhood visibly throbbed in the steamy air.

He shuffled to the side, tore his gaze off her juicy flanks, and peered up to her face. “Mind if I join you?”

Barely registering what he’d said, Celestia stared longingly at his cock. How - how was he so well endowed? Cadance had mentioned how his package seemed bigger than usual, but she’d brushed it off as the rambling of a lust-addled mare - now, as her eyes ran up and down the imposing, vascular length, she realized there may have been something to her fellow Princess’ claim. Dangling down well past his knee, thicker and nearly longer than his arm, his shaft was unable to stand under its own weight. Instead the menacing length continued to fatten and lengthen, lazily attempting to seemingly reach out towards her ass.

There was only one reasonable thing a mare in her position could do, and she had no reservations of doing it. Instead of saying a thing, she straightened up and sashayed down to the bottom of the well, hefting her breasts up to rest on the ledge and pushed into the reinforced plate glass of one wall. Though it was tempting to give herself a closer look at his inexplicably large stallionhood, there was another, far more enthralling way for her to access his endowment.

One of the only regrettable things about her girth was that going something as easy as kneeling and giving Shining a blowjob was a herculean endeavor. Her belly and breasts, though alluring, made it all but impossible to bury her face in his goods without her laying down or levitating him up to her chest - bearing that in mind, she did the next best thing. Smooshing her tits against the glass, she threw her arms back and grasped the yielding cheeks of her ass.

Any even remotely straight stallion would have pounced on her the moment she’d presented herself in such a slatternly way, but Shining was no amateur. Kicking a stool over as she spread and braced her legs, he smiled all the broader. The cake she’d snacked on was nice, some of the best available outside of Canterlot, although having a bit of cream would be the perfect complement to the pastry.

Though she could only see his head and shoulders as he stepped up behind her, she knew good and well what he was planning to do. He was a little under half her height, with the top of his head barely reaching her massive, swollen suns adorning her wide, callipygian flanks. Still the vast size difference between them didn't deter him - in fact, he liked having her tower over him. After learning the first time that her body grew to accommodate her unborn foal or foals, making her taller and broader than she was when she didn’t have a bun in her oven, he’d adapted well to satisfying her in all her titanic glory.If anything,

She knew she was acting needy, displaying her gushing, winking marehood like some desperately horny thing, but she didn’t care - moreover, neither did he. Clutching the base of his shaft, he touched the tip of his stallionhood to her entrance. It was painfully obvious what they wanted, regardless of whether his erection was purely from arousal or simply morning wood, and there wasn’t a force in Equestria that was going to stop them.

Throwing his arms wide and hugging her tush, he bucked his hips and steadily drove his stallionhood into her balmy depths. Her eyes went wide, she stifled a whimper, and she fought the urge to buck back against him. Cadance had to have been right about him; flying in the face of all reason, his dick felt significantly thicker than it had any right to. If anything her estimation of his girth earlier seemed to be about half of what was currently spreading her wide.

Waiting until his medial ring kissed her sex, she threw her weight back and hilted herself on him. Despite his comparably small stature, he filled her entirely - and she did mean entirely. His cock-head ground against her cervix, she’d only barely been able to sheath the entirety of his length, and his weighty, pendulous balls came to rest against her bulging clit. If his dick hadn’t grown, maybe she was getting delirious - in any case, after giving her a few seconds to adjust to the monumental intrusion, he started to move.

She hung her head and watched as milk practically erupted from her tits. Sandwiched between herself and the glass partition, her breasts were squeezed every time he thrust into her, running down her body and the walls to pool at their feet. With rivers of cream mingling with the water around them, she got his timing down and began bucking back against him. Other mares may have just stood there and taken what he had to offer, content to let him do all the work, but she was better than that.

Clenching on his backstrokes and relaxing on his plunges, she lovingly milked his shaft - an act that was swiftly rewarded. The sound of magic split the air as a warm, tingling sensation surrounded her nipples and clit. She didn’t have to look to tell that he was going to make sure she didn’t leave the shower without being completely satisfied.

Had there been a camera present, the spectacle wouldn’t have looked out of place for an adult film. The enormity of his cock, the disparity of their sizes, and how she grew louder and louder with every passing moment was wondrously sinful, and it didn’t take long for his efforts to bear fruit. Skyrocketing towards relief after what couldn’t have been more than a few minutes, she tensed.

The water and dairy beneath her were joined by gouts of climactic juices surging from around Shining’s pistoning shaft, and despite being built for a literal flood the shower drain just could not keep up with their lovemaking. Thick pre and milk both surged the water levels higher, lapping against their ankles and then calves. It was a toss-up on if he’d slow down after making her climax, but he didn’t relent - if anything, her orgasm fanned the flames of his stallionly desires. Tightly gripping her ass, unable to fully reach her hips, he hammered away at her from behind.

Her initial climax was followed up by a second, then a third and a fourth, until she was essentially cumming nonstop. With her knees shaking and threatening to buckle, she put her full weight against the glass and howled out in glee as her tits cascaded great waterfalls worth of milk. Darned if she could say that there were other studs in the world who could rival Shining, but she liked to think he was one of a kind.

On and on he went, fucking her while using his sorcery to tease her most sensitive bits, until his rhythm gradually changed. The long, exquisitely deep strokes he favored shifted to rapid-fire, almost frantic thrusting. Though she couldn’t stop herself from braying and drooling into her cleavage, only adding to the mess she was making, she could feel him starting to flare.

“B…buck,” he wheezed, plastering himself to her upturned tush. “Don’t t…think I can…”

It was cute that, in spite of how much he did for her, he thought he had to hold himself back at her expense. Summoning her strength and wading through her blissful haze, she arched her back and tightly squeezed his cock while ramming him as deep as she possibly could. Her ass clapped shut around his torso and thighs as the added bit of stimulation did the trick, sending him over the edge and sealing his fate.

Slamming his hips to her rear, he groaned as he came. She could barely hold herself up throughout his climax, enduring a final orgasm while his seed flowed into her. Her belly gurgled and sagged to the floor under the weight of his load. His orgasm was like a river gushing into her, her belly rounding off and pushing both of them both backwards and up one stair, and then another as she came yet again. Irrespective of if his cock increased in size, the incredible volume of his essence was more than enough to knock up a mare several dozen times over.

“H…holy heck,” she rasped, feeling his seed gushing out from around his wildly throbbing length.

She’d definitely need to investigate what was going on with him, but that could wait until after she washed up, recovered, and ate a hearty breakfast.She hoped that he might stay there for a while, locked together in bliss, but eventually his orgasm petered out and he gently patted her ass. Shivering as he withdrew, she held herself steady and slowly turned to try to face him, her horn alighting as she sealed up her well-loved snatch to hopefully make the most of his generous deposit.

Rocking backwards she heaved herself up to her hooves, her belly having roughly doubled in size for the moment. It was likely just temporary, but her womb bulged another half her height below her hooves to rest on the bottom of the well and rounded out in a perfect, stretched sphere neatly attached to her torso. They both glanced over to the shampoo, grabbed the bottle with their magic, and snickered. No matter what was or wasn’t going on with him, she’d never been more thankful that he and his wife were happy to have her as a third…