Getting Out of Hoof

Trotting up to the Canterlot castle, smiling and giving the smallest waves to the ponies she passed, Cadance tried to act casual - tried in that she was going to the first social event since she’d blossomed into an absolute colossus of a mare. The dress Rarity had fashioned for her did its job, slimming her figure and allowing her to walk without much trouble, yet she still drew attention from guards and any townsponies she came across. She turned her eyes away from the keep and to the one thing that had given her strength throughout the last month - her husband.

“It’ll be fine,” Shining reassuringly hummed, reaching over to stroke her foreleg. “From what Rarity said, the whole theme of this little gala is to cut loose.”

“Can you blame me for being nervous?” she sighed, slowing as two praetorians pulled the castle’s front door open for her.

Shining shrugged as he walked inside, dipping his head to the guards as he passed. “No, but she hasn’t steered us wrong yet. If she said that it’s a party where you can feel comfortable in your own skin, I believe her - besides, you’re not that much bigger than Celestia.”

Steadily moving through the foyer and toward the great hall, Cadance scrunched her snout. Either Shining’s memory was failing or he was downplaying her size - in either case, she had no doubt that she’d stand out like a sore hoof. Tearing her eyes from the entryway, she looked back at herself.

“Do I look alright?” she whispered.

“You look more than alright,” he reassured her, sneaking a not-so-subtle look at her monumental hindquarters.

Though she’d done her best to prepare for the occasion, she was still a bit self-conscious. Even with the ensorceled garment she wore, partially because of it, she was a titanic bombshell. Her makeup was perfect, her mane was styled exquisitely, and her gown was resplendent, though that was part of the problem. The last thing she wanted to do was outshine her old teacher.

Musing on what her mentor would be wearing, or if she’d be wearing anything at all, she snorted at Shining’s prior comment. She wasn’t the biggest alicorn in Equestria, only being slightly taller than Twilight, and there was one she could almost guarantee she was going to run into. Celestia was a large pony, she wasn’t debating that, but she’d be downright small compared to -

“Cadance!” Celestia exclaimed, rushing over to greet her esteemed guest. “It’s been ages!”

Cadance faltered, her eyes widening in shock, as she gazed upon Celestia. The Princess of the Sun looked the same as ever, tall and with a slim figure, although she was easily triple her ordinary size. Frozen in place, embraced by the elder alicorn, she looked over and instantly spotted Luna approaching.

It would have been strange to discover that Celestia had somehow grown substantially, but Luna was in a similar state. Only marginally shorter than her sister, the Princess of the Night still towered over the various partygoers chatting or helping themselves to hors d'oeuvre. Anxiously returning the hug, utterly at a loss as to what was going on, she knit her brow.

Pulling back and withdrawing her wings, Celestia giggled and cocked her head to the side. “What - did Rarity not tell you that we’d be able to let our hair down for this little soiree? Don’t tell me you expected Luna and I to wear our crowns for the event!”

Taken aback, Cadance only then remembered something she’d known all along. Alicorns were a special breed, exceptionally long-lived and with nigh unlimited arcane might, and they were the only variety of pony who didn’t stop growing after puberty. She’d spent the last several weeks so concerned about the spell she’d cast on herself, the enchantment which had left her exquisitely huge and profoundly gravid, that she’d nearly forgotten that Celestia and Luna kept their natural sizes restrained by their magical crowns.

“Rarity told me you’d been going through some changes, but she failed to mention how incredible you look,” Luna noted, smiling up at the nonplussed Princess. “If you keep this up, you’ll be bigger than my sister!”

Celestia rolled her eyes and gave a soft groan. “Luna, dearest sister, that’s hardly a concern. As soon as the potions start flowing, I’ll show both of you a thing or two…”

Seeing her former mentor glance to the side, Cadance looked over and spotted a table absolutely festooned with corked bottles. As a sudden realization dawned on her, her heart skipped a beat. This wasn’t just some casual get-together, nor was it a ball of any conventional sort - no, the festivities would unquestionably have some sort of novel, likely kinky twist. She lifted her head and scanned the growing crowd, looking for a very particular pony.

“Excuse me for one moment,” she muttered, spotting Rarity at the far end of the cavernous chamber.

Ponies gave way before her, parting and allowing her to pass, as she made a beeline over to the couture. She wasn’t about to hedge her bets on a suspicion, especially if that suspicion revolved around something so scandalous, so she had to get the record straight. After reaching her destination, with Shining staying right by her side, she lowered her head down to the seamstress.

“Cadance, I’m so happy you -” Rarity was silenced as a gargantuan hoof was pressed to her snout.

Turning away, Cadance leered over her shoulder at the unicorn. “A word…”

She trotted away and to the veranda, knowing the castle’s layout like the back of her hoof. While she wasn’t opposed to attending a party with perverse overtones, she was left feeling a bit put off that she hadn’t been prepared for such an engagement. Once Rarity had joined her, stepping out into the chill evening air, she ignited her horn and closed the door.

“Is everything alright, Darling?” Rarity asked, her voice tinged with concern.

Cadance cleared her throat, deciding to cut right to the chase. “Is this some kind of kink thing - I mean, I’m alright if it is, but I want to know before things start getting - uh - spicy…”

Looking between his wife and Rarity, Shining’s eyes went alight. “Seriously? Is this one of those kind of parties?”

“Darlings, kink is a bit of a loaded word. This event is simply meant to celebrate large, particularly curvaceous ponies! Celestia practically forced my hoof to organize the affair, so it’s not my fault if things eventually take an amorous turn,” Rarity explained, flipping a curl of mane from her face. “I’m dreadfully sorry if there was some misunderstanding, but I did mention that you’d be sure to have a wild time…”

“I…huh…” Cadance grunted, straightening.

The invitation she and Shining had received did in fact mention having a wild time, though she hadn’t had any inkling what that had meant. Peering inside, through the glass door separating herself from the gathering, she watched as Celestia laughed and flirtatiously waved a hoof at a group of ponies. The sight of the senior alicorn having fun while traipsing about at her full size evoked a conflicting series of emotions. On one hoof, she was happy that her fellow Princess was enjoying herself - on the other, despite her best intentions, she felt a pang of jealousy.

Shining peered inside at Celestia, having followed his beloved gaze, before craning his neck up at Cadance. “You know, you could easily show her up…”

“Shining!” Cadance and Rarity both bleated, though the latter had a decidedly amused tone.

Seeing the couple locking eyes, Rarity cleared her throat. “Well then, since your burning question has been addressed, I’ll leave you to be for now.”

Waiting until Rarity had made her leave, Shining uneasily smiled. “We don’t have to stay, and I was only joking about -”

“Oh we’re going to stay,” Cadance cut him off. “If Celestia and Luna are comfortable being here, there’s no reason at all for me to leave just yet.”

Turning and opening the door, leaving Shining where he stood, she marched back inside and toward the duo of alicorns. She’d had no intention of garnering any more attention that she had already, having turned heads from the moment she walked into the ballroom, but she was compelled to give Celestia some competition. She stopped by a table of refreshments, absentmindedly ladling herself a cup full of punch, as she observed the massive siblings.

Celestia may have been a touch bigger than herself, with a rear that absolutely dominated her figure and a pair of huge, soft bosoms that wobbled every time she laughed, which inexplicably rubbed her the wrong way. Though she may have lacked the particularly distended belly as herself, the elder Princess was carrying on like an excited mare on prom night - something that rubbed her in all the wrong ways. She couldn’t explain it - heck, she almost felt bad about it, but the sight of one of her oldest friends brazenly showing off made her feel foolish for having spent weeks trying to hide her size.

Luna’s presence didn’t help matters any. Essentially being a slightly smaller version of her sister, she giggled and conversed with partygoers without a care in the world. While she wasn’t nearly as tall or full-figured as either Celestia or Cadance, she was another focal point of the throng. Tall, slender, and with a surprisingly well-built physique, she stood like a great amazonian Princess amongst the comparatively diminutive ponies gathered around her.

Having just taken a sip of her drink, a drink she quickly discovered was spiked with something strong, Cadance nearly choked when she saw Celestia turn, flag her tail in a very conspicuous way, and invitingly wiggle her tush at some intrepid young stallion. The audacity of seeing who she’d thought was a reserved, motherly alicorn shamelessly showing off fanned the gradually rising flames of her pettiness. As she recovered from her coughing fit and realizing she’d need more than one glass of punch, her eyes drifted over to the table bedecked with elixirs.

“Babe?” a soft voice asked, prompting her to look down and over.

Dismissively waving a wing at Shining, she finished her drink and hastily refilled her cup. “It’s fine - I’m fine…”

Shining pursed his lips and stared up at her face. “Don’t give me that. If you think I wouldn’t notice that something has you out of sorts, you’d be wrong.”

He was right - he knew it, she knew it, and she wouldn’t be surprised if any of their friends knew it. She turned her eyes to the floor, her ire temporarily stifled, and gave a deep sigh. If there was a single pony on the planet who could see through her, even if she was doing her best to hide her feelings, it was him.

“It’s just…” she trailed off, peeking back over at the sibling Princesses. “It’s just that - well, look at them…”

Looking over at Celestia and Luna, he smirked. “They look like they’re having a good time.”

“Yeah…” she whispered, glowering as Celestia rolled her hips from side to side and set her bosoms swaying.

“You know I’d never tell you what to do, but I can say what I’d do if I were in your horseshoes,” he continued.

Peaking a brow, she glanced down at him. “And that would be…?”

“I’d go out there and join them,” he coolly answered. “You’re a Princess like them, you’re just as beautiful as they are, and I’d bet my bottom bit that those ponies fawning over them would be champing at the bit to lavish the Princess of Love with affection.”

Though she was reluctant to admit it, he’d made a point - that said, simply wading into the crowd to strut her stuff ran contrary to the way she typically carried herself. For buck’s sake, she was a Princess, an icon of all ponykind, so she couldn’t just flaunt herself like some oversized, exquisitely pregnant floozy ~ could she? Caught at an impasse, her long-kept urges warring with her better judgment, she bit her bottom lip.

“Now if you really want to show them up,” Shining chuckled, trotting over to the mound of neatly sorted potions, “you could always down one of these…”

Watching him browse the various bottles, ultimately selecting and lifting a vial from the table, she drifted over to him. “And that one is…?”

He shrugged and shot her a wink as he levitated the elixir up to her face. “Something to level the playing field.”

Her eyes widened, a smug grin split her muzzle, and she fought back a laugh. Inspecting the other bottles, seeing a good number of them bore similar labels, her suspicions were confirmed. The little had been marked with a small label with the most simple of markings - 1.5x. If she was right about the concoction, drinking it would do one of two things - either make her grow half-again in size or make her even more fertile than she already was.

“And you’re ok with me showing myself off?” she quietly inquired.

Shining shook his head and plucked a second bottle from the table. “Personally, I’d rather you take this one,” he remarked, holding up a vial with 5x printed on it, “but that might be a bit much to start…”

Giggling to herself as he pocketed the 5x potion, she took the hovering 1.5xconcoction in her forehoof, magically pulled the cork free, and brought it to her lips. While a part of her told her it was a bad idea, not for the least of which reasons being showing up her colleague and mentor may result in some backlash, it wasn’t like she had many options. She was an honored guest, one of only three royals present, and she was expected to mingle - as such, being a bit ostentatious couldn’t hurt that much.

She turned up the bottle with only the slightest bit of hesitation, chugging the meager contents and allowing them to wash over her palate. The potion tasted surprisingly good, sweet and a bit citrusy, which led her to shake the very last drops from the vial onto her tongue. Seconds after swallowing the last big, almost as soon as she tossed the emptied container into a nearby trash can, she felt a warmth blossom in her belly.

The world shifted, shining shrinking beneath her, as the room became smaller - no, things weren’t getting smaller, she was getting slightly bigger. Craning her head and inspecting herself, seeing her gain what seemed to be another few inches in height, she was stricken with a pang of concern - not because she felt odd, nor that most of the party’s attendees had taken note of her growth, but because the dress clinging to her frame became tighter.

Regardless of its mystical material or enchantments, the gown struggled to contain her frame. Seams went taut, the hem slid up her hind legs, and she could sense her brasserie constricting about her back and abdomen. Stutting forward, turning her head from side to side while smiling at all the little fazes gazing up at her in wonder, she slowly, methodically made her way over to her fellow Princesses.

Each step she took sent a small quake through the marble floor, her gold-clad hooves clip-clopping one after another, until she came to loom over Celestia. The older alicorn had been just a hair taller than her minutes prior, but that was the case no longer. Now standing an inch or so above her senior, she smiled down at the alabaster mare.

“Sorry about scampering off earlier,” she snickered, barely paying the Princess any mind as she extended and stretched her vast wings, “I was a bit out of sorts when I arrived.”

With a smile plastered on her face, a smile Cadance could tell was very much forced, Celestia craned her neck upward. “Interesting…”

Cadance squinted, her confidence wavering in an instant. Celestia was no fool, easily one of, if not the most guileful pony in Equestria or any other land, so the sudden realization that she may have missed something, some small detail that could derail her attempt to knock her mentor down a peg, sent a chill up her spine. Dipping her head, bringing herself nose to nose with the snow-white Princess, she held her composure.

“What, may I ask, is interesting, Cele?” she cooed, bracing herself for the worst.

Celestia’s eyes played over the younger alicorn for a moment, lingering on her hind quarters, and she smirked. “The fact that you were so out of sorts that you were the first pony to try one of those potions.”

Just like that, with that one simple observation, Cadance realized she’d made a grave mistake. While Celestia was demure and well-mannered most of the time, being almost motherly in the public’s eyes, that was a carefully crafted facade. The most ancient ruler in all of Equestria, contrary to what many ponies thought of her, had a playful streak that would give even Discord a run for his money. Seeing her old teacher gaze over at the table of elixirs, she gulped.

“Since my friend was gracious enough to kick things off for everypony,” Celestia began, looking down at the stallions and mares surrounding her, “would one of you fair ponies be kind enough to fetch me something to drink? I’m quite parched and I’d hate for dear Cadance to feel uncomfortable being the only one partaking from those delightfully fascinating beverages.” Several of the ponies around her immediately wheeled around and dashed for the potions, tripping over one another in a mad scramble oblige her, as she turned her head and locked eyes with Cadance.

With her jaw nearly having hit the floor, Cadance balked. “A…aren’t you going to tell them which one you want? There are -”

“Oh dear, sweet Cadance,” Celestia interrupted, slowly shaking her head. “I’m sure whatever they bring me will be more than enough for me to captivate everypony.” Stepping forward, she brought her muzzle to her companion’s ear. “Just remember that you started this…”

Stepping back before Cadance could reply, she peered down at the first stallion to bring her a potion, took a bottle from his outstretched hoof, and lifted the vial to her opening maw. She downed the drink in a single gulp, smacking her lips as she finished. It was only once she’d finished did she turn the glass to the stunned royal.

“A fine choice - after all, bigger is always better,” she purred, portions of her growing by the second. “This will be fun…”

Cadance stepped back, as did the other ponies assembled, as Celestia’s proportions went skewed. While she didn’t grow much in a vertical sense, the same couldn’t be said for her various assets. The elder Princess’ waist went whipcord thin, her breasts exploded in size, and her ass expanded in a ludicrous degree. To say she was shocked would be an understatement, but she couldn’t tear her eyes off the stunningly curvaceous figure standing beside her.

Like some exaggeration of a supermodel, every facet of Celestia’s sensual proportions was magnified to the nth degree. The dress she was wearing stood no chance to contain her, the gown shredding just below her waist and becoming a tattered micro-skirt, and her bosoms were so large that they squished against the floor beneath her. Lowering herself ever so slightly, she balanced on her bust and laughed.

The once-regal Princess of the Sun had willingly become what Cadance could only describe as a bimbo. Full, plump lips, a rack and ass that rivaled her even with her increased size, and an inordinate amount of soft, downy fluff on her chest - each and every facet smacked of carnality. The maternal alicorn had flung herself into sinful depths and changed into nothing short of a succubus.

There was something undeniably appealing about Celestia’s enhancements. From her juicy flanks and intimidating stature to her warm, inviting smile, the Princess was beautiful and awe-inspiring in every conceivable way. Lavished with praise and compliments, rolling to her side and causing her subject to jump back, the voluptuous alicorn twisted her head to peer up at her ally.

It would have been annoying enough to have Celestia surpass her in sheer mass, but the attention her impromptu rival was getting made the situation all the more vexing. What started as mere flattery quickly became physical, with ponies caressing the shapely Princess, which did nothing to hinder her growing sense of envy. Glancing over at the table of magical drinks, musing on if she should help herself to a second so quickly, she did a double take when she spotted Luna browsing and selecting a bottle.

Apparently just as happy to partake as her sister, Luna chugged a green elixir. In the blink of an eye, the umbral Princess’ body ballooned outward, though not in the same way as her sibling; slabs of well-defined muscle blossomed about her figure, transforming her into a hulk of a mare - an effeminate, beguiling hulk of a mare, but a hulk all the same. She leapt into the air and took to the sky, soaring across the room to land beside her enormous sister.

“This is exhilarating!” she boomed, lifting and flexing a foreleg.

The small display of power drew multiple ponies over to the brawny Princess. Though she was still significantly smaller than Cadance, and only slightly bigger than her sibling, she curried favor among those with an appreciation for physical strength and powerful builds. Stallions and mares alike encircled her, marveling at her buff physique, while she shamelessly struck pose after pose for her adoring fans.

It took everything Cadance had not to scowl. In a matter of seconds, just after she’d won the crowd over and wrested their attention from Celestia and Luna, she’d been robbed of the spotlight. Inspecting the throng, seeing that the only pony present paying her any mind was her husband, she stormed back to the table of potions.

“H…honey,” Shining sputtered as she lowered her head to leer at the elixirs, “there’s no need to -”

“Help me find a good one,” she stated, cutting him off.

A bead of nervous sweat rolled down his temple, he stiffened slightly, and he fretfully looked to the table. “A g…good one?”

As she spied yet another bottle with 2x on its label, a wolfish smirk played across her face. Was she being petty? Yes. Was she caving to her impulses? Yes. Did she care that she was about to make a spectacle of herself? No, but that was the whole point. If Celestia and Luna were willing to indulge their exhibitionistic proclivities - by all the stars in the night sky, she could do the same herself.

Following in her fellow Princess’ hoofsteps, she chugged the drink, placed the empty bottle down, and instantly reached for a second. The first shots of a battle had been fired, and she was not going to lose. She chugged an additional two potions back to back, her belly already warming from the first, and stepped away from the table.

Her nerves went alight, adjusting to her increasing mass, as everything appeared to grow smaller around her. She had no doubt that ponies would notice her soon enough, but she couldn’t help but draw a bit more attention to herself throughout the process. Size wasn’t everything, so putting on a bit of a performance would definitely give her an edge.

“Mmmmmmm,” she loudly hummed, extending her wings and throwing her head back. “It’s so good!”

The sensual call worked perfectly, acting like a siren’s call to the partygoers. Shifting and sashaying back to the center of the room, ignoring the popping seams and straining dress that threatened to tear apart at any second, she merrily hummed to herself as she joined Luna and Celestia. To Tartarus with it - she had just as much right to bask in ponies affection as they did.

Unmoved by Cadance’s colossal size, Celestia shifted her weight and rolled onto her back. “I’ll admit, that is an amazing look for you.”

“Thanks,” Cadance sighed, cautiously lowering herself to lay beside the Princess of the Sun. “Shining has been going on and on about just how incredible I look, but I -”

Riiiiiiiiiip

She paused, her blood going cold, as the unmistakable sound sailed to her ears. By the time she looked back, already cursing herself for her impetuous decision, it was too late. She jolted upward, her contained bosoms and belly bursting from their cloth confines. Teetering from side to side, her wings trying in vain to keep her balance, she yelped when she involuntarily and quite unexpectedly listed over onto her side.

Her hind legs were spread, forced apart by her titanic, spontaneously leaking breasts, as blood rushed to her face. While it was true that she’d wanted to put on a bit of a show, she hadn’t planned on displaying her body in such an obscene fashion - unfortunately for her, and to the great amusement of the throng, that’s precisely what had happened. There was no going back, she couldn’t undrink the elixirs, and the effects they had upon her were staggering.

Her bosoms grew to tremendous size, setting her off balance and filling the small gap between her hind legs, but her stomach quickly became her largest feature. She teetered precariously on her massively swollen gut, teetering from side to side while using her wings to keep balance. If it hadn’t been obvious enough that she was exquisitely pregnant, the metamorphosis left no room for doubt.

She looked back at her rear, feeling the fabric of her dress climbing up her tush. It came as no shock that her ass had been affected by the cocktail of magical beverages, but she was still surprised by just how large her derriere became. Though the garment was still intact, she was keenly aware of the fact that she was essentially mooning anypony behind her.

As the physical portion of her transformation came to a gradual halt, giving her some modicum of relief, a strange sensation washed over her. She felt hot - literally hot, and all manner of amorous thoughts flitted through her mind. It almost felt like she’d gone into heat, but that was impossible ~ wasn’t it? Confused, alarmed, and wracked with shame, blood rushing to her face, she was snapped from her stupor by the sound of a haughty laugh.

“Quite the display Cadance,” Celestia remarked, “but if you’re going to be so crass, you may as well embrace it.”

Pushing herself over with a wing, she mirrored the Princess of Love and got onto her back. Unlike Cadance, who teetered on the verge of dismay, she hadn’t the slightest bit of reservation about putting on a bawdy performance. She splayed her hind legs without the slightest bit of hesitation, going so far as to use her wings to fondle her utterly huge tits, and wallowed on the floor.

“Dear subjects,” she continued, closing her eyes, “feel free to worship your Princess…”

Cadance had seen all manner of things over the years, from raging villains to monsters of all kinds, but nothing - nothing could have prepared her for the sight of Celestia, the oldest and one of the most revered ponies in all the land, to sink to such depths of depravity. Ponies flung themselves upon the supine Princess of the Sun, caressing her in very unscrupulous ways, and it was at that moment that she realized the party had taken a turn. What may have started as a relatively innocent gala was quickly devolving into a celebration of hedonism incarnate.

The absurdity of the situation wasn’t beyond her. Celestia, Luna, and herself, three of the four Princesses in Equestria, had willingly become parodies of their former selves. A busty bimbo, a musclebound amazoness, and a literal giant - it was like something out of a randy joke! Though she was slightly worried that one of the attendees may speak of the bizarrely licentious gala, she wasn’t too concerned; on the off chance that word of what transpired did start to spread, it would be a matter of the Princesses’ words against the crazy-sounding admission of a commoner.

Things would have been bad enough if it was only Celestia who’d decided to indulge herself, but that was far from the case. Accompanying her sister, bracing her hind legs and raising her chiseled tush into the air, Luna allowed a stallion to feast upon her loins. Though she couldn’t say who the little stud was, his face all but buried between the Princess’ muscular buns, he had no reservations about lapping at the alicorn’s nethers like a lucky colt on prom night.

Not knowing what to say, unsure of exactly what to do, she watched with a heady cocktail of admiration and shock while her fellow Princesses succumbed to their desires. Milk streams from her teats, her marehood angrily seized upon itself, and she secretly yearned to join the pair. Never in a thousand years would she have guessed that the sisters would be so unabashed with carnal wants, leaving her wishing for similar treatment.

Celestia’s obscenely huge tush, tits, and fluffy chest allowed her to handle her myriad of fans with ease. Her marehood leaked and winked excitedly, each breast was larger than a full-grown pony, her ass wobbled and swayed in an exceptionally tantalizing way. A single stallion could have handled her, if they were brave enough to be entombed by her gargantuan ass, although that would hardly be fitting for someone of her standing. One partygoer ate her out, another two suckled on and massaged her bosoms, and a trio committed themselves to kissing and lovingly caressing her neck, shoulders, and chest.

Luna was no better than her sibling. A duo of stallions lay beneath her, nursing at her teats, while the third practically buried his snout in her depths. As she bucked her hips and softly moaned in bliss, her eyelids fluttered. She may not have been the biggest of the three alicorns present, but she was having the time of her life regardless.

“You - yes, you,” Celestia called, prompting a stud nuzzling her neck to peek up at her face. “Go fetch a number of potions for you and your friends - make them something exotic.”

Cadance had no way of knowing what her senior had met, but she found out quick enough. Once the stallion had accomplished his task, having turned and rushed headlong over to the table of elixirs, he returned with a number of bottles gathered in the crook of one forearm. He passed two of the elixirs to his compatriots, drank one himself, and quickly displayed the full effect of the potions he’d chosen.

His stallionhood, which had been throbbing beneath him, became the endowment of a dragon; his companions suffered a similar fate, one growing what appeared to be an oversized griffon dong while the other wielded a diamond dog’s cock. It was all too clear where their intentions lay, their tools excitedly slapping their underbellies, as they parted ways. Celestia welcomed them all, extending her tongue as she pressed her tits together with her wings, and braced herself for the trio to put themselves to work.

“Yes…” Celestia groaned, locking her fetlocks around the stallion’s back who’d leapt between her parted thighs.

Cadance found herself drifting forward and lowering her head, angling herself for a better look at the action. The dragon cocked stallion sank into Celestia’s marehood, impaling her with a single, smooth plunge, as his compatriots threw themselves into the carnal fray. It was an incredible sight, made all the more wild by the duo of studs who were tit-fucking and being sucked off respectively, and she was unable to suppress a thrilled shiver.

Celestia’s breasts wobbled and swayed, entombing the canine tool buried between them, while she bobbed her head and choked herself on the griffon length within her muzzle. Though only certain parts of her had grown, she moved with the voracity of an erotic titan. Her every move was calculated, servicing the three stallions with a level of sensual expertise that only a mare of her age held, and she was far from the only one.

Quietly panting quietly, with a stallion resting on her back, Luna threw her ass back to meet her lover’s bucking hips. She could have easily overpowered him, thrown him to the floor and crushed his pelvis to dust, yet she was only slightly more forceful than he was - a fact that he didn’t seem to mind in the slightest. Along with being railed from behind, the duo beneath her continued to suckle at her bosoms - adding yet another layer of stimulation.

Getting increasingly turned on by the second, Cadance started when something pressed against her inner thigh. She lifted her head, scowling and prepared to chastise whatever idiot had been audacious enough to presume she wanted to join the other royals, and was surprised to find Shining clawing his way up to her groin. Smiling up at her, sweating slightly from the exertion of climbing over her dock and past her pucker, he wiped his brow and came to rest on the plump, succulent loin of her marehood.

“Shining,” she irritatedly huffed, causing him to flinch, “do you have that ring Rarity gave you?”

He patted himself down and grabbed the pocket of his vest. “I do, but why -”

“Put it on,” she rumbled, her libido stripping away the last vestiges of her reservations.

The ache in her loins had become too much to bear, the scent of sex clung to her nostrils, and the continual noise of groans and delighted whimpers pushed her to her limit. There was a very real chance that she was going to regret what she was about to do, but that would be a problem she could deal with later - for the time being, she wanted - no, needed some relief from her husband. She gazed down at him, watching as he pulled a gem-encrusted ring from his pocket, and poured magic into her horn.

They’d only just received the custom-tailored artifact from Rarity that morning, it having been delivered just before they’d set out to attend the party, so they’d had no chance to actually test the thing. After a moment’s hesitation, Shining dipped his head and slipped the ring over his horn. As the band of gold and jeweled settled into place, glowing faintly, he was enveloped in a turquoise aura.

Cadance levitated her husband upward, curious and praying the ring did as it was advertised to do. His stallionhood, no bigger than usual, twitched and throbbed in tune with his heart, filling her with dread. She couldn’t be upset if the artifact didn’t work, considering she hadn’t spent a single bit on it, but she’d be immeasurably disappointed if the thing didn’t give him an endowment that could fill her marish needs - mercifully for her, after several tense seconds, her fears were found unwarranted.

His cock practically exploded in size, growing to be bigger than the rest of his body, and flopped between her tits. The heat and weight of his length was divine, exciting her in a way she’d last felt on her first passionate night with him, but she didn’t let herself get carried away - not yet at least. Looking to his face, seeing he was just as astonished as she was, she cleared her throat.

“Not feeling lightheaded ~ are you?” she asked, keeping her hooves crossed that he wasn’t going to pass out from a lack of blood flowing to his brain.

Tensing his lower half, making his god-slaying shaft twitch ever so slightly, he beamed. “I feel fine - great even! Now that we know how this works, what are - Woah!”

Cadance didn’t let him finish, sandwiching his stallionhood in the valley of her bosoms. Warming him up, regardless of their sizes or where they were, was an absolute must - that and she wanted to show Celestia a thing or two about loving a stallion. Moving him forward and back, she squeezed her tits together with her forehooves and chuckled to herself.

Yeah - yeah, this would work perfectly. The mere thought of feeling his behemoth slipping into her made her drool from both ends, but she made no move to rush things. Sex was an art, she was the Princess of Love, and she was about to show everypony why she held her crown. Looking over at the table of potions, she levitated a number of potions over to herself and her husband.

Neither she nor Shining hesitated to help themselves to another drink. Most of the elixirs involved growth in some regard, and the beverages she’d blindly grabbed were no exception. Though she couldn’t say what the exact specifications were, both she and Shining - at least parts of them, grew once again.

Shining’s already formidable stallionhood swelled, the prominent veins along its length pulsing in tune with his heart, while her tits, tush, and tummy expanded. She’d been a bit concerned when she’d grown initially, but that was the case no longer. Fully committed to the hedonistic circumstances, she continued having fun with her husband.

Without a doubt, she was the largest pony in all of Equestria - heck, maybe the largest pony who’d ever existed, and she relished that thought. Her breasts were like mountains, her ass big enough to give even the largest dragon a moment for pause, and her distended belly spoke highly of her fertility. She loved it - she loved it more than she had any right to, yet the magical moment was quickly broken. Hearing hushed whispers of adoration, having tipped the odds back in her favor, she risked a glance over at her amorous adversaries.

Luna couldn’t have cared less, more focused on the physical aspects of getting off, but Celestia - Celestia was a different story altogether. Still juggling the three stallions screwing her in one way or another, the Princess of the Sun’s stared over at her foe. Using her magic, the less-than-pleased alicorn hefted the stud rutting her tits and brought beside the pony railing her.

“I - ahem -” she coughed, having reared back and momentarily cleared her muzzle. “I believe there’s room enough for the both of you, as long as you don’t mind sharing. Give me a moment…”

Calling upon her arcane might, she levitated her lower half from the floor. Cadance didn’t know what to make of the odd move, confused as to why her old teacher would be doing something so odd, but she understood what Celestia was doing when one of the stallions shot beneath the hovering Princess. With his reptilian length standing proudly at his groin, pointed to the floating, monumental ass above him, the intrepid soul readied himself to be laid upon.

Celestia lowered herself slowly, trembling as the spear-like dragon cock sank into her ass. The second stallion wasted no time, rearing back and locking his forelegs around her meaty thighs, as he readied himself. Held aloft by her magic, she steadily raised and lowered herself while both of the studs began fucking her in tandem.

“Much better,” she sighed, acclimating to the pair of impressive lengths filling her . “Cadance, observe, this is how it’s done…”

Without the slightest bit of hesitation, she sorcerously threw another bottle from the table to herself, caught it in her forehooves, and downed the potion in the blink of an eye. Her most imposing assets grew once again, her bosoms and backside eclipsing the rest of her. For all intents and purposes, she’d become a literal sex machine, a being of pure carnality, but looks were only one element to her being. Putting her modified body to work, she bent her lovers to her will.

Cadance’s motions slowed, a sneer met her lips, and she glowered. Situated as she was, while not ideal, she could instantly see what Celestia had meant. The elder Princess clenched and drew the stallions in, making them each squirm in delight, while she used them like a pair of living, breathing sex-toys. Undeterred, she tightened her grip on her breasts, showering Shining, herself, and the ponies around her in a shower of warm, creamy milk. If her former mentor thought she was going to give up that easily, she was sorely mistaken…

It was at that point that the party ascended into a full-blown orgy. The ponies who hadn’t devoted themselves to a Princess set upon one another like passionate piranha, licking, plowing, or sucking one another off in what could only be described as a charnel house of lust. Cadance, Celestia, and Luna paid their subjects no mind, the former two too fixated on their competition while the latter reached her breaking point.

With a mighty rearward thrust, Luna toppled the stallion who’d mounted her off. She turned to face him, taking full advantage of his confusion, and flung herself onto him like a beast possessed. Straddling him and hilting him in an instant, driving the wind from his lungs, she looked back at the two ponies she’d abandoned.

“Well?” she blared with a crazed look in her eyes. “I’ve got two more holes to fill!”

The stallions only faltered for a second, possibly fearing for their lives, before they joined their companion. One of the two jumped on and began rutting her ass, as the second moved around, pulled her forward, and jammed his cock into her snout. While they didn’t say a word, neither had any doubt that disobeying her would more than likely result in a trip to the infirmary after she’d had her way with them.

Cadance took her eyes off Celestia, knowing what had to be done. Her cleavage was slick with Shining’s pre-cum, she was so turned on that it hurt, and it was well past time that things progressed. Pulling her husband away, having to use no small amount of magic to lift his prodigious tool, she brought the tip of his length to her entrance, spread her hind legs as much as she could, and drove him forward.

Her distended belly and vast bust made it impossible for her to see what she was doing with Shining, but that didn’t stop her. Given the lewd circumstances, far too large to stand on her own hooves, her only option was to continue - not that she minded in the slightest. Guided by feel, having done similar things over the last few weeks with her husband, she slowly exhaled as he plunged into her. Though she tried not to show it, the mere act of being penetrated by something so divinely massive was almost enough to make her climax on the spot - almost.

“L…little help, Shining,” she sputtered.

It would be possible for her to do the job herself, but that would require a level of focus and concentration she was genuinely unsure she could muster. The rosy color of his magic joined hers sorcery, mingling into an iridescent purple, as they worked in tandem. It was a shame that she wasn’t able to gaze upon him, to see his reaction from wielding something so insanely huge, but she tried not to let it bother her - instead, she fixated on the pleasure of being completely filled for the first time since her transformation.

Sounds of impacting bodies, whimpers of delight, and grunting filled the air, crafting a sinful symphony, as each and every pony present gave in to their urges. Stallions and mares went at one another with glee, occasionally changing or even joining other partners to mix things up, but the nexus of all the action was the Princesses themselves. Gradually losing interest in one another, too preoccupied to give their competition much thought, the trio of alicorns lost themselves to their bliss.

Luna was by far the most aggressive of the royals, going through stallions with glee. When one stud came, filling her ass, snout, or snatch with his seed, another quickly took their place. Between her physique and magic, not a single one held a chance to best her, even the largest and most heavily-endowed lasting mere minutes with her, and her movements grew more frantic and heated with each passing moment.

By far the most relaxed of the three, Celestia savored the trio of exotic cocks plumbing her depths and the stallions they were attached to. Her maw, marehood, and backside were pistoned by her trio of lovers, their giant lengths sawing into her, but she still wasn’t satisfied. Cracking an eye and seeing a lone unicorn watching her, likely waiting for his turn, he plucked the stallion from the ground and placed him on her chest to make use of her gigantic, unused breasts.

Rolling her head back and unleashing a guttural cry, Cadance moved Shining faster and faster. The unfathomable rapture he afforded was phenomenal, the best she’d had in ages, and it allowed her to forget all about the scene she was making. With her breasts streaming milk, her belly swaying and heaving with each breath, and writhing on the cracking marble floor beneath her, she ignored the depravity around her.

Her prodigious body swayed forward and back, driven by the force of Shining’s thrusts. The wiser ponies around her gave her space, knowing they may be crushed or knocked aside by her bulk, but a few stuck close to the action. The sight of her succulent depths, drawn out before being stuffed in by his colossal shaft, was something many had only dreamt of, and those brave enough to linger by her tush were given an unfettered view.

The orgy went on and on, ponies only taking breaks to recuperate for a hoofful of minutes before committing themselves for second, third, or even fourth rounds, until things ultimately came to a head. Unlike the other attendees, none of the Princesses had climaxed once, their preternatural endurance letting them outlast mere mortals, but even they weren’t without their limits.

Braying to the heavens, Luna was the first to peak. Thick, syrupy nectar erupted from her quivering depths, coating the pair of stallions pounding into her and causing them to climax seconds after her. In spite of the power she wielded, she collapsed atop the stud she’d been riding, pinning him under her weight, as she gasped for breath and dreamily smiled.

Celestia didn’t last much longer than her sister. Her orgasm was spectacularly devastating, her pucker and marehood seizing around her lover’s lengths and all but forcing them to fill her with their seed, as she gulped down the cum of the pony who’d been fucking her face. By the time she was finished, her quartet of mates slipping free from her to paint her with the final ropes of their jizz, she was an absolute mess.

White spunk lay strewn over her indecent body, her fur was slick with sweat and juices, and the poor stallion under her was trapped, but her blissful, cum-drunk expression told anypony and everypony that she’d gotten what she truly yearned for. Shakily turning her eyes to the side, ignoring the wriggling beneath her, she watched the Princess of Love. Out of all the alicorns in attendance, there was one who held a keen edge over the others.

Cadance’s breaths grew ragged, a tremble crept into her thighs, and a familiar warmth blossomed in her abdomen. The signs were there, she’d slipped past the point of no return, and there was nothing in the world that could stop what was about to happen - still, she held herself back. As she angled Shining’s plunges to better beat against her occupied womb, feeling him staring to flare, she heard two simple words that filled her with glee.

“I’m close,” he rasped.

She could have encouraged him, telling him how badly she wanted him to breed her, but she didn’t say a word - no, she let her actions speak for herself. Hasting his pace, she bore down and constricted her silken folds around his pulsing shaft. This was it, he was about to give her exactly what she needed, and she was going to cross into nirvana alongside him.

Feeling his scalding essence bath her interior, hearing him groan while he bucked away at her, was the final nail in her coffin. Her climactic howl brought the room to a standstill, but it was what the ponies didn’t see or hear that caused anypony and everypony in the vicinity to reach their limit in tandem. She was the Princess of Love in more than just title, her otherworldly variety of magic making her an avatar of amorous might, and the wave of power that shot from her was devastating.

The mares and stallions around her cried out in unison, cumming in an instant. Even Celestia and Luna weren’t spared, each suffering aftershock orgasms as they attempted to rest, but the pony who was most impacted was Cadance herself. The Princess of Love increased in size, drinking in the overflowing carnal energy like a sponge to water, as she struggled to weather the onslaught of ecstasy.

She scarcely understood it, much less registered it, but the final effects of the potions she drank kicked in with her orgasm. Ponies around her were driven back as her bulk expanded outward, shoved to the very corners of the cavernous chamber. All the growth and fertility elixirs pushed her to become a maternal goddess. Her stomach was big enough to contain dozens of foals, her breasts could feed legions of babies, and her husband’s small form was buried completely in her bust.

In spite of being pregnant, her overactive ovaries went into high gear. It should have been impossible, but she was knocked up again in that instant. In that instant, her loving husband sired a contingent of progeny with her. Sensing yet more life blossoming within her, somehow knowing her family was going to get much, much bigger, she smiled to herself and basked in the love of being a mother.

By the time her orgasm had truly subsided, the ballroom looked like an erotic war zone. Nectar and spunk was strewn across the floor, everypony was filthy, and there were several partygoers who’d succumbed and passed out. While it wasn’t the first time that the great hall had been used for something so unscrupulous, it would take no small amount of effort to fully clean the expansive chamber.

With his magic sputtering and threatening to fail, Shining somehow found the strength to pull himself free and falteringly teleport himself on top of Cadance’s heaving belly. The last thing he did before collapsing atop her was to pull the ring clear from his horn, returning his softening stallionhood to its ordinary size. He stared down at his wife’s face, grinning like an idiot, and dipped his head to kiss her impossibly huge stomach.

“I love you,” he whispered.

Cadance gazed into his eyes, her cheeks darkening all the while. “I love you too…”

Caressing her abdomen, he rested his cheek against her. “I wish you could stay like this forever.”

“I know,” Cadance softly admitted, knowing he wouldn’t have minded in the slightest if she was her current size permanently, “but…”

“But what?” he pressed, cocking his head.

“But I can’t - even if I wanted to, I’ll go back to normal eventually,” she muttered, looking away.

She hadn’t wanted to tell him, fearing he’d try to sway her ultimate decision, but she’d been gradually warming to the idea of staying large - perhaps not as big as she currently was, but definitely taller and more curvy than her standard size. Being huge was empowering, a part of her liked the attention being massive brought, and making her husband happy made her happy in turn - in short, though she still struggled with the concept, she knew she’d eventually miss being a giantess.

“If…if I - Cough - may,” Rarity croaked, unsteadily tottering over and drawing the couple’s attention. With cum in her frazzled mane, wobbly legs, and her makeup smeared beyond saving, the typically picturesque unicorn presented a vial of golden, glimmering liquid. “If both of you would like to make your arrangement more permanent, take this. While I would never try to sway you one way or another, I -”

Cadance used what was left of her strength to snatch the bottle from her friend’s grasp and lift it to her face. There were times in life when fate made itself apparent, and this was one of those times. The stars had aligned, everything in her life had brought her to this moment, and she wasn’t going to let an opportunity like this slip through her hooves - besides, if she ever did regret the decision, she was sure that Twilight or one of the many potion masters in Equestria could concoct something to reverse the effects.

Feeling a slight tingle, she let the emptied bottle fall to the floor as she peered up at her lover. Shining falteringly hovered down to her face, his magic sputtering and threatening to give out, so she lifted a foreleg, caught him in her hoof and carried him to her face. His gleeful expression was priceless, causing her to giggle like a school filly.

“Guess there’s no going back now ~ huh?” she inquired.

Leaning in and kissing her nose, he shook his head. “I guess not, but I’m not complaining.”

She held him as steady as she could as she rolled over and got her free hooves under herself. The part was concluded, everypony was in desperate need of a bath, and she pitied the janitors who were left to tidy things up - nevertheless, she was on cloud nine. Having more energy than either of the other Princesses, seeing them wallowing merrily on the floor, she beamed down at Celestia.

“Do me a favor,” she began, stooping low and bringing her muzzle to the cum-slathered alicorn. “Let me know when you’re having another party like this.”

“I…I will,” Celestia replied, giving the oversized Princess a knowing smirk.

With nothing left to say, Cadance called on her magic and whisked herself and her hubby back to their abode. She wanted nothing more than to crawl into bed, a bed that definitely would not be capable of holding her, and fall asleep beside the stallion who’d won her heart and convinced her to do the craziest thing she’d ever done, but that would have to wait. For the time being, and for likely the next few days, she’d need to make accommodations around the castle for herself…