Celestia’s back pushed against her headboard as she situated herself in bed. The soft, silken bedsheets rustled across her skin, bare save for the portions covered by her bathrobe. The texture of the sheets was a creamy, cool smoothness that contrasted well with her robe’s warm, fuzzy embrace. Celestia slipped her blankets a few inches up over her ample hips, just far enough to cover her crotch.
There came a knock at the door. Celestia took a moment to pull her robe shut around her chest. Admittedly, the generosity of her bust meant that such a task took a deliberate effort. Each one bigger than her head, Celestia’s breasts were a pair of delectable, oversized pillows that squished in delightful ways as she moved to conceal them. The sensitivity of her large nipples was such that the tight brush of the robe across their tips sent a quiver of pleasure through her chest. A lesser mare might have moaned; Celestia just pursed her lips, tied her robe shut, and nodded in satisfaction. Once she was sure of her modesty, she called, “Come in!”
Outwardly, she was the very picture of royal serenity. Princess Celestia had had more than a millennium to practice her countenance, and looked perfectly composed as a result. On the inside, though, she was licking her lips. Her gaze darted over to the gold embossed clock on her wall to confirm the time. Nine o’clock PM in Celestia’s chambers had come to mean a very specific thing over the centuries. It was time-honored tradition that had been refined across decades, but had come to mean one very specific thing: the Princess’ evening snack.
Celestia waited patiently for her bedroom’s double doors to swing open. As they did, she smiled and said, “Raspberry cream tonight, Gustave? Or perhaps Angel food cake?”
“Neither, I’m afraid,” came a voice that was decidedly not Gustave’s. As its owner came into view, it became even more clear that Celestia’s personal dessert chef was far from her quarters. “Though I think you shan’t be disappointed.”
A grinning Luna walked through the doors, her shoes padding softly on the thick carpet. In her hands, she bore a silver platter. It didn’t hold one slice—it held six, each thickly cut and smeared with a generous amount of chocolate frosting. The aroma hit Celestia’s nose instantly, but she was far too distracted to pay it much attention.
Since her return, Luna had dressed in mostly conservative clothing, clinging to the over-stuffed finery of centuries long past in an effort to keep something, anything familiar in her grasp. Not tonight. She wore a simple blue shift, sleeveless. The curves of its night-shaded fabric clung to her waist, sliding inches up her thighs with each step she took. Luna’s hips swayed, her whole body moving with a fluidity that Celestia had not seen beyond a dance symposium.
Celestia’s eyes widened. Sensations, surprises, urges warred in her head. All soon succumbed to the inevitable monarch’s composure, though. “Oh. Good evening, Luna. I didn’t expect to see you up this early.”
Luna smiled back, stopping a few feet from Celestia’s bed. “And why not?” she asked, her lips quirking to one side. “Am I not allowed to visit my sister before she retires?”
“Of course you are,” Celestia said—a bit too quickly, perhaps. The way the insides of Luna’s elbows pushed against her chest was more than a bit distracting as well. As the younger sister, she’d never quite had a chest to match Celestia’s, but Luna had always possessed a well-sized set of...assets in her own right. Celestia allowed herself to smile, her gaze slipping off of Luna’s torso and up to her eyes. “I just didn’t expect you to bring cake.”
“Ah, didn’t you?” Luna’s smile twitched upward. “I was informed by the kitchens that you usually take sustenance at this hour. I even inquired as to your favorite.”
Her favorite… Celestia’s stomach groaned quietly, her nostrils flaring at the familiar scent of chocolate-frosted cake with almond cream filling. She took a deep breath. “Well...yes. But not quite this much, usually. And I’m used to my chef delivering it.”
Luna took a step forward, her smile never faltering. “Ah, I see.” She surveyed Celestia for a moment. She looked faintly amused. “Cake in bed, Tia? A pleasurable experience, I’d suppose.”
Celestia suddenly felt somewhat embarrassed. Fighting to keep the robe tight around her body, she slid her legs off the side of her bed, and free of her sheets. She stifled a mental pang of disappointment as her luscious, bare flesh was covered entirely once more, but decided to ignore it. Her feet hit the carpet, toes curling against thick curls of fluff. “No,” she said, somewhat awkwardly. “I take it on my tea-table. You may set it down there, if you like.”
“Nonsense.” Luna’s horn glimmered, and the tray of cake hovered out of her hands, sliding gently onto Celestia’s bed. Celestia strained to keep her gaze on her sister, and not on the sugary delight sitting mere feet away. “You work harder than anypony else in the kingdom, Tia. You deserve a little pampering.”
“But—”
Luna cleared her throat. Not loudly, but enough to make a point of it. Celestia sighed, then pushed herself back until her shoulder blades were against the headboard once more. Her feet slipped up onto the bed, this time above the covers. Her ankles poked out, her toes wriggling atop her comforter.
Looking satisfied, Luna nodded. Her horn glittered once more. A plate swept off of the tray and was soon weighted down with a slice of cake and a fork. Celestia accepted the plate, though she felt more than a bit awkward holding it as Luna’s gaze lingered on her. This had always been one of her more...indulgent habits, and she couldn’t help the tingle of discomfort that Luna’s knowing smile gave her.
“Thank you, Luna,” Celestia said. She cut off a small triangle of cake with the blunt side of her fork—though she longed to take more—and popped it into her mouth. As the frosting touched her tongue, Celestia felt her knees go weak. Oh, but this was her favorite. She could have wolfed the whole thing down in four bites...but there was still her sister’s presence to be seen to.
Swallowing, Celestia levitated over a napkin from the tray and daintily dabbed at her lips. “I doubt that you’ve only come all the way up to my tower to deliver cake, though,” she said, a bit playfully. Her wings ruffled behind her, flexing slightly as the warmth of the cake spread through her belly. Oh, this was a good batch indeed.
“I simply wanted to talk with you,” Luna said. One dark eyebrow went up. “And to share in your company.”
“Well,” Celestia said, lifting another bite to her lips. “What did you want to talk about?”
“Well,” Luna said lightly, “perhaps your cake habit, for a start.”
Celestia stiffened. She finished chewing, then swallowed. “Cake habit? Excuse me, Luna, but I must have misheard.”
“I certainly don’t mean anything by it,” Luna said. “Just that you seem to have, ah, filled out rather nicely in my absence.”
Celestia caught Luna eyeing her stomach. A blush, unbidden, quickly rose to her cheeks. She jerked the sheet up to cover her middle. “I take great pains to keep myself healthy,” she said. “My personal trainer—”
“Does an excellent job, I’m told.” Luna’s smile twitched. “As does your chef, following each one of your workouts.”
Celestia’s blush deepened. Her grip on the sheets slackened, not entirely, but enough to allow Luna to get a grasp of her own on their edge.
Luna caught the look of shame in Celestia’s eyes and laughed. “Oh, worry not, sister mine,” she said, still chuckling. “I don’t mean to imply that you’re—what was the word?—overweight. Simply that you’ve become a little...plump.”
Celestia felt a dawning sense of horrific inevitability as Luna’s fingers curled around the tip of the sheet. “I assure you, Luna, I am as healthy as—”
Her sister sucked in a breath. “And what’s this?” Celestia stopped midsentence and glanced down.
Admittedly, she had nearly no view whatsoever, her bust jutting out far too much for her to be able to see her own belly from this angle. Luna, however, had a prime perspective on her sister’s middle. The tightness with which Celestia had pulled her bathrobe shut had caused the fabric to pull tight around her stomach, making obvious the muffin-top resting there. Celestia’s cheeks flushed redder as Luna poked playfully at her belly, the tip of her finger sinking a good two inches into the pudge she found there.
“Soft,” Luna remarked. “Though certainly nothing to be ashamed of.” She gave Celestia a soft smile. “In our day, a plump figure was a healthy one.”
“That was then,” Celestia countered. “Today, healthy means lean.”
“Does it?” Luna said. “Dear Tia, I’ve seen the dreams of your subjects. Beauty is in the eye of the beholder...and from what I’ve seen, the image of beauty I remember remains quite true today.”
Gods above, but did Luna’s chest, pinched as it was against her left shoulder, have to look quite so alluring? Not to mention the bare skin of her wrist, which rubbed teasingly against the underside of Celestia’s breast in a way that would have appeared to any other onlooker to be completely unintentional.
Celestia exhaled, a long, steady breath that ended only when she felt the brush of Luna’s fingers against the seam of her robe. Luna’s gaze met hers, low-lidded and suddenly filled with promises of things that Celestia hadn’t dared dream of in centuries. “May I?”
Celestia nodded. Tenderly, Luna’s fingers curled around the edge of her robe and teased it away. A soft, cream-colored stomach came into view, protruding a few inches over the bottom of her thighs. Luna smiled and slipped one hand across it, long, slender fingers kneading and massaging Celestia’s belly. It rippled and flowed like jelly, oozing around Luna’s palm as her other hand crept silently across the covers. Celestia sighed pleasantly, letting the warmth of her sister’s touch sink into her skin. She hadn’t felt that touch in so long...
“You’ve let yourself go, dear sister,” Luna cooed. “Though not in an unpleasant way. You’ve filled out—become the very image of the beautiful matron goddess our subjects could once only dream of.” Her hand slipped around Celestia’s waist and curled around the cute little love handle she found there. “Though that’s not the only place you’ve grown some new curves.”
Celestia let out a squeak of pain and surprise when she felt something give her a hard pinch on the bottom. She nearly jumped an inch off the bed. She caught sight of a blue-furred hand scampering away from her rear end and glared at Luna. For an instant, all the shocked fury of the Sun Goddess bore down on her little sister…
...and then she realized just how much younger she felt, how childish she suddenly seemed. Goodness, was she pouting?
Celestia burst out into a fit of giggles. Wiping her eyes, she said, “Gods, but I’d forgotten how forward you were.”
“Are,” Luna corrected her, smiling. “Though I’m being positively subtle by my own standards. Goodness, but you modern folk are a conservative lot.”
“You wouldn’t know that by the last generation’s talk,” Celestia said dryly. Then she smiled at her sister, a rosy blush rising to her cheeks once more. “You really think I’m still beautiful?”
Luna scoffed. “You? Not look absolutely stunning? Impossible.” Celestia caught her eye, and the two chuckled together. “But I will say,” Luna added, “that your diet has certainly made you look...delectable.”
“You’re just saying that,” Celestia teased. But she was starting to slip into Luna’s rhythm, a steady, sure tempo that knew where it was going, and what lay at the other end. She’d forgotten how...easy it was to let her sister’s confidence subsume her, drive her, inflame her.
“Am I?” Luna leaned in closer, until Celestia could make out every one of her eyelashes. Luna’s hand trailed down Celestia’s side, curving out around her hips and coming to rest on her thigh. The hem of Celestia’s fluffy robe slid across Luna’s forearm as Luna’s pointer finger drew small, tight circles around the edge of her sister’s Cutie Mark. Celestia grunted, a pulse of heat welling up at her crotch as Luna grabbed a handful of squishy thighflesh.
Luna leaned even closer, massaging her sister’s thigh, her fingers slipping ever closer to the thick, rounded expanse of Celestia’s well-fed rear. Her luscious lips were slightly parted, the corners of her mouth turned up as if at a joke that only she could hear. Celestia could see her tongue, bright and pink, flicking eagerly past her lips.
That was all Celestia could take. Just as Luna’s other hand slid across the robe covering her other thigh, Celestia let herself lean forward, her face angled toward Luna’s. It took barely any effort; Luna had already made it easy. Just a scant few degrees, a brief push - and their lips met.
Celestia moaned softly into the kiss. Luna’s skillful fingers had folded around the inside of her thigh, caressing the soft, creamy flesh. Once or twice, they flicked playfully toward Celestia’s crotch, teasing the heat that was rapidly growing there. Luna’s tongue pushed into her sister’s mouth, twisting when Celestia’s flicked at its tip. Their mouths pressed together, Celestia’s enormous breasts pressing lightly against Luna’s collarbone.
When Luna pulled away, Celestia felt almost like she’d lost a part of herself. She was panting, she realized, her cheeks flushed with an arousal like she hadn’t known in hundreds of years. She found her own hand resting on Luna’s waist, her little finger curved across her sister’s wide-set hips.
Luna’s face was flushed, too. When their gazes met again, Celestia recognized something in those eyes: a hunger, a desire, an impeccable, insatiable yearning. She could feel it welling up inside of her too, a need for Luna that she hadn’t felt in centuries.
“Why did you never send for me?” Luna breathed down at her. Their foreheads touched, the tips of their noses nearly brushing together. “After my return.”
“It’d been so long,” Celestia said. She searched for understanding in Luna’s dark gaze. “I’d lived through centuries without you, and you… You had been imprisoned for just as long. I didn’t want to take advantage.” The words sounded ridiculous the instant they slipped out of her mouth.
“Advantage?” Luna’s lip curled. “How so, Tia? Like this?” And then her lips were pressed against Celestia’s again, hungry, eager to taste her sister once more. Celestia responded in kind, her hand pushing past the hem of Luna’s dress and pressing against her back. She pulled Luna in close, their pillowy chests pressing together. Celestia groaned as she felt Luna’s nipples, fully erect, brush against her own.
When they separated again, there was a strand of saliva connecting their mouths. Celestia licked it away, then inhaled sharply. “No,” she said. “Like this.” And she pushed Luna off of her and shoved her to the bed, pinning her.
A hunger welled up inside of her, and Celestia embraced it. She attacked Luna’s mouth, their lips twisting as their tongues curled against one another. Luna took her kiss fiercely, her fingers groping at Celestia’s ass. Celestia groaned, her thick thighs rubbing together as her sister kneaded her oversized rear. She hadn’t felt this intimate, this close with another pony since Luna had been banished. Their breasts pressed together, that same closeness forming a near barrier, two enormous mounds of pillowy flesh that Celestia had to crane her neck over to attack Luna’s plump, gorgeous lips properly. Her own hands worked at Luna’s shoulders, long nails raking down her sister’s upper arms.
The kiss ended. Luna was breathing hard, for once looking surprised. Celestia smirked inwardly. She still had it.
“Goodness, Tia,” Luna said, taking a deep breath. She groaned and gave Celestia’s Cutie Marks a good squeeze. Her hands explored the expanse of Celestia’s flesh beneath her bathrobe, leaving her sister’s ample rear jiggling in their wake. “You’re so heavy.”
Celestia blushed, sitting up. She kept Luna pinned to the bed, her oversized rump planted directly over her sister’s thighs. Through the rumpled fabric of her sister’s dress, she could feel the mound at Luna’s crotch grinding against her own.
“Heavy, am I?” she asked. She shifted her weight a bit, letting her oversized butt cheeks squish against Luna’s legs. Luna hummed in agreement, happily groping heaping handfuls of her ass. “What did you call me? Plump?”
“Large? Perhaps not,” Luna said with a smile. She gave Celestia’s belly a squeeze, then slid a finger an inch into Celestia’s belly button. Celestia gasped, the alien sensation tingling like something between a tickle and a massage. Then Luna’s touch trailed down her sister’s waist until she’d once more found her thighs, thick and round from decades of steady workouts and regular feedings. Celestia gave them a flex, and then groaned when Luna squeezed them in return. “Curvaceous, certainly. Voluptuous, even. Moreso than any mare in the kingdom.”
“I guess that’s what happens when you feed a princess too much cake.” Celestia shook her head in mock-sadness. She cupped her palm around her muffin-top belly, feeling it shake and jiggle pleasantly from the aftershocks of Luna’s teasing. Then she moved her hand to cover Luna’s, and gasped when Luna seized it and moved them both against her swollen marehood.
“Too much?” Luna purred. She forced Celestia’s fingers to rub against her own puffy lips; her sister groaned softly in return. The bright blue of Luna’s magic had begun to glitter around the hem of her slender shift, unzipping it and removing it from her body. Celestia watched with a sense of approval bordering on hunger as Luna’s breasts bounced free of their cloth prison, her little sister’s body breathing in the air of her chambers completely for the first time.
“Well,” Luna said, smiling and squishing her naked body against the covers, “you’re certainly no longer the dainty little filly you used to be.” Celestia grunted. That much was true. That mare had been tiny, slender, lean. “You’ve filled out in all the right ways, curves atop curves, with naught but soft flesh for me to hold onto. Oh, no, Tia,” Luna murmured, “if anything, you’re not yet curvy enough.”
Celestia paused. She’d been rocking her hips, gently grinding her bare crotch against Luna’s. “Oh?” she said. The sides of her robe fell, revealing her torso completely. Her M-cup breasts rested comfortably atop her pudgy belly, her underboob nestled right into the soft curve of her stomach. She gave Luna’s hips a squeeze between her thighs, her delectable legs flashing white in the dim, sultry light of the bedroom. “And what’s the supposed to mean?”
Luna flashed her a pearly-white grin. “Merely that I delivered you a gift. It would be rude for you to ignore it.”
Celestia opened her mouth to respond—and then felt something cold and thin prodding against her shoulder. She shut her mouth, then glanced to the side. Her plate hovered temptingly in the air, now piled with a second slice of cake to join the remnants of the first. The warm, chocolate aroma hit her, mixing with swirls of nuttiness. Celestia felt her mouth water.
“Go on, sister,” Luna teased. “You’ve worked on expanding those curves for decades, if not centuries. Surely a few more calories would only help.”
The plate was already in Celestia’s hands. She hadn’t noticed it happening, but she’d shrugged off her bathrobe completely, letting the thick fabric fall to her bed and leaving her perfect white body completely exposed. “Well,” she said in mock reluctance. “If you insist.” Her nose twitched, her nostrils flaring. The fork she took daintily in hand. She speared a healthy chunk of cake—not like one of those anorexic pieces she’d cut for herself earlier; this was cake, and she intended to enjoy herself—and returned Luna’s smile. Then, with a bit of flair, she flicked the fork toward her mouth and popped the cake past her lips.
Celestia moaned as the taste seeped past her tastebuds. Oh, gods above, but this was heavenly. The explosions of sensation in her mouth, though, were not much more pleasurable than the mounting, snarling heat growing between her legs. Celestia felt her abdomen tensing, her thighs flexing as Luna’s marehood ground against hers. Her sister’s hands had moved to her enormous tits, and were now flicking playfully across her nipples. Celestia squeezed her boobs between the insides of her elbows, letting oodles of titflesh squish out around them. She brought the platter back toward her neck, letting her forearms rest atop her plus-sized breasts. With each one more than a match for her head in size, they made for a wonderfully pleasant, if rounded, surface on which to rest her snack.
“You know,” Luna grunted. Celestia’s breasts jutted out a good foot in front of her, a pair of magnificently plush watermelons that rippled and jiggled as Luna’s fingers sunk deep into their sides. Her perky nipples twitched, Luna’s thumb and forefinger sliding around one as her other hand kneaded gently at her shadowed underboob. “I asked around the guards’ quarters last week.”
“Mm?” Celestia took another bite. Her eyelashes fluttered. Another surge of heat went up through her abdomen. The squeeze of Luna’s thighs had caught the edge of her lower lip between them, smooth, silky flesh slick with their combined juices.
“Turns out they were all shocked at the thought that you might have...ah, invited them to your chambers.” Luna barely had to push her head up from the bed before Celestia’s breasts were before her, looming like twin suns over the horizon. She curled her tongue around one of those hard, quivering nipples, eliciting another groan from her sister. “Another pony might find your libido to be slacking, Tia.”
Celestia could barely find it in herself to reply. Luna’s fingers stroked around the curve of her rounded tummy, then found the place between her legs where her marehood touched Luna’s. Luna’s torso pushed her crotch down and then up again, her moist, puffy lips sliding against Celestia’s. Celestia’s thick thighs squeezed tighter around Luna’s lower body, increasing the intensity of their intimacy until she felt like she could no longer tell where her cunt ended and Luna’s began. Her own hands roamed eagerly across Luna’s own generous breasts, short pants of pleasure mixing with cute, guttural moans as she molested every inch of her sister available to her.
“But I have another theory,” Luna murmured. She nuzzled the side of Celestia’s enormous breast, soft titflesh squishing against her cheek. A long, sensual lick up the side of one tit sent a shudder of anticipative pleasure up Celestia’s spine. Luna smiled, grinding her core harder against her sister’s. “I think that you’ve merely grown too big. Too wide, too thick, too tall - you must have grown a good six inches taller across the centuries. Once, I could look into your eyes, could compare my chest to yours, but you’ve surpassed every pony in this kingdom.” Luna’s gaze glittered with mischief, and she gave Celestia’s breast a squeeze. “Because you can’t help it, can you?”
Celestia groaned. She wasn’t even using her hands to eat anymore, occupied as she was with kneading Luna’s soft, pliable jugs. Instead, a golden aura glimmered around her horn, a naked slice of cake hovering mere inches away from her muzzle. Once every few seconds, another delectable morsel would break off and float into her waiting mouth, always eager to devour more.
“I think you want to be the biggest,” Luna said. “I think you wanted to be the curviest, most bountiful mare in the kingdom, and merely used the cake as a way to get there. Oh, I don’t doubt your appetite,” she said, giving the gentle rolls of Celestia’s belly flab a squeeze, “but I do doubt that you didn’t notice what was happening.”
Luna nuzzled harder against Celestia’s breast. Her cheek left an imprint in her sister’s tit, one side of her muzzle pressed tightly against the warm, heavy titflesh. Celestia wondered if Luna could hear her heartbeat. “Thicker thighs. Bigger breasts. An ass that any stallion would die for, and any mare would kill for.” Her hands snaked around Celestia’s middle, her forearm squishing into her sister’s love handle as she groped greedily at Celestia’s plump, rounded rear. “Towering above the rest of your kingdom, save for perhaps a precious few.
“And even your belly.” Luna gave her sister’s middle a light pat, giggling when it jiggled in response. “You may talk about workouts and diets in public, but I think you want ponies to be shocked when they see the weight you’ve put on. You want them to stare, to undress you with their eyes - only, you’re already filling your clothes to bursting, every inch of your soft, plush skin bulging with voluptuous curves.” Her lips curled into a smile. “You love how much it turns you on.” Her fingers curved around Celestia’s hips, coming to rest once again on a Cutie Mark that was nearly wider than her entire hand.
“No, Tia,” Luna murmured. Her fingers slipped around Celestia’s flank and down the inside of her thigh. “I don’t think you’ve lost your libido. I think you just needed a partner who could properly - “
Two fingers slipped inside Celestia’s cunny, now dripping with heat and arousal. Celestia gasped, her thighs clenching as Luna began to masturbate for them both.
Luna’s grin widened. “ - satisfy you.”
Celestia’s wings flared out behind her. They were completely stiff, much like her back, which had arced back at Luna’s touch. Her breasts were thrust forward, her nipples almost painfully erect. Celestia groaned, tingles of electricity flying through her body as her crotch muscles clenched around Luna’s fingers. Luna’s grin slipped off her face, vanishing into the depths of a moan as her thumb pushed inside her own moist cunt. Celestia was happy to join her; her cheeks puffed out with arousal, a fire burning in her gut as a third finger entered her.
Luna’s deft, skillful digits drew tight circles around Celestia’s walls, rimming against the sides of her puffy lips before vanishing once more into her sister’s moist depths. Luna came at Celestia’s cunt like a masseur, tracing her fingers around her sister’s jewel as her knuckles tightened around her lips. Celestia traced her hands down Luna’s shoulders, cupping her little sister’s breasts and squeezing as she felt Luna’s lower lips once more grind against her own.
Juices ran down the insides of her legs, staining her sister’s dark blue fur an inky, velvety black. As Luna’s fingers wove their circles around her crotch, Celestia felt like she was being wound up like a spring. Before long, the tightness in her core grew unbearable, her thighs and middle flexing as Luna brought her pleasure to a breaking point.
Celestia’s spine arched, her massive breasts slapping against her soft, portly belly as her whole body twisted in euphoria. Her inner muscles clamped down around Luna’s fingers, and she howled with a sense of pure, complete satisfaction as she hadn’t known in centuries. Stars blurred at the corners of her vision, her hips gyrating wildly as Luna milked her orgasm for every last drop. Her vagina winked over Luna’s knuckles, her sweet-scented juices squirting out to coat her little sister’s thighs.
When she came down from her peak, Celestia was panting. Beads of sweat had gathered on her forehead; she wiped them away. She was unable to keep herself from rocking forward another time, already missing the sense of eruption that was rapidly being replaced with a warm, hazy afterglow. Yet the heat still burned at her core, simmering, but not yet quenched fully. She breathed hard, and met Luna’s eyes.
Mirth, pleasure, and satisfaction glimmered behind those deep blue eyes. Luna inhaled deeply, then smiled up at her sister. “It appears that even a thousand years of disuse has not robbed me of my skill,” she murmured, looking quite pleased with herself.
“Mm.” Celestia let her hands fall to her sides. She cupped Luna’s breasts, her thumbs fingering her sister’s nipples lightly. Luna’s areolas were wide and dark, each one nearly the size of a smaller mare’s palm. Her breasts were soft and warm, like dough, and they seemed to invite Celestia’s touch like a playground to a foal. A shudder went through Celestia’s body. “You were...very good.”
“I always was,” Luna said softly. She smirked. Firmly, though not roughly, she pushed her sister back until Celestia was sitting back on the backs of her legs. Some wriggling brought Luna’s legs free of her sister’s weight, and she curled them delightedly beneath her as she slipped a hand once more around Celestia’s rump.
“Goodness me,” Luna said, her eyes darting toward the platter. Her eyes glittered with mischief. “You ate two whole slices? Somepony’s certainly hungry.”
Celestia chuckled. She cupped her boobs in her hands, hefting them a few inches into the air. It took some doing; they were quite heavy, and solid besides. “You said it yourself, Lulu dear. I have curves to feed.”
“Mm.” Luna gave Celestia’s tummy a quick squeeze. “I hadn’t realized that we had a piggy for a princess.”
Celestia shot her a look of mock outrage. Luna laughed softly, the sound of it like chiming glass.
“But you’re not finished yet,” Luna said. She smiled. “We have four more slices.” She plucked one from the air; Celestia hadn’t noticed her hovering it over.
“Tell me, sister mine,” Luna said idly, turning the slice of cake over in her hand. A few crumbs fell, coming to rest on her crotch and thighs. A bit of frosting smeared across her thumb, and Celestia licked her lips. That chocolatey, nutty smell made her will go weak, and her stomach growl. “What part of a slice do you enjoy the most? The cake itself? The filling? Or perhaps the frosting?”
Celestia’s reply was instant. “The frosting.”
“Mm.” Luna popped her chocolate-smeared thumb into her mouth and sucked on it for a moment. She rolled her eyes in exaggerated pleasure, then popped it back out. A thin sheen of saliva covered the skin, and her tongue flicked out after it. “I can certainly see why. So soft and smooth and rich.”
Celestia growled playfully. “Do you just plan to tease me, Luna?”
“Oh, no,” Luna said, smirking. “I plan to feed you. But…” Her hand drifted downward, past her marvelous breasts, until her wrist was resting on her thigh. Celestia’s eyebrow arched up into her forehead as her sister pressed the frosted side of the slice against her still-wet clit and began to rub it in. Long, dark strokes of frosting streaked against the dark blues of Luna’s crotch. The sweet smell reached Celestia’s nostrils from here, mixing with Luna’s own musky arousal and making her toes curl in delight.
“Let’s make it interesting, shall we?” Luna said. She took a bite of the cake and licked her lips, more crumbs falling onto her breasts. “Clean me off, and you’ll have all the frosting you could want.”
“Now that,” Celestia said, “is a diet I could be interested in.” Luna blushed cutely, and Celestia chuckled. Once more taking her sister’s shoulders in her arms, Celestia pushed Luna back until she was leaning against the headboard. She then leaned forward to bury her face in Luna’s crotch. The tips of her sister’s nipples brushed against her forehead, pushing back strands of her ethereal mane. Her own breasts pressed against the insides of Luna’s thighs as her head descended.
The sight of Luna’s bare crotch greeted her. Two cute, puffy lips twitched and winked with obvious need. Celestia took a long sniff and groaned. The chocolate scent only made her stomach growl all the harder, and Luna’s sexual musk reinvigorated her own arousal. Luna’s hand came to rest on the back of Celestia’s head, her fingers curling through her mane. Celestia let her younger sister guide her muzzle down, further and further, until she was hovering right above Luna’s pussy lips.
She began with a lick: a long, slow lick up the outside of Luna’s marehood. Luna shuddered, groaning pleasurably. A squiggle of frosting had accumulated on Celestia’s tongue, which she flicked back down her throat with a shiver of delight. The sweetness of the chocolate mixed with Luna’s tangy taste, making for a treat to remember.
“Mm,” Luna groaned. “Just tasting, are you?” Her fingers tightened around Celestia’s scalp, burying her muzzle deeper into her marehood. “Eat up, Tia. There’s a sweet feast there just waiting to be devoured.”
Celestia was happy to comply. The taste of her sister had lit a fire in her that demanded only one thing: more. Her belly danced, squishing as Celestia flattened herself against the mattress. She ran her slender white fingers down Luna’s waist, then tightened her grip on her sister’s thighs. Luna’s legs widened, leaving additional room for Celestia to lower her head, though her older sister’s breasts were still large enough to squish against the insides of Luna’s thighs as she pressed them further against the quilt.
Lapping at Luna’s insides, Celestia found herself warring with a desire to get all of that frosting down in one gulp. Oh, how she loved feeling full, loved feeling her belly slosh and gurgle with innumerable sweet treats - but Luna’s own juices tasted just as good, if not better, and set her libido aflame besides. The deeper her tongue went into Luna’s core, the more her little sister moaned and squealed in delight. Celestia led the tip of her tongue around the edge of Luna’s cunny and clit, covering half with frosting, and half with clear, sticky liquid. She collected them together in her mouth and swallowed with a flick of her tongue across the edge of Luna’s pussy.
Though smaller than Celestia’s own, Luna’s breasts were still more than hefty enough to hang down past her chest. They were tighter, rounder, and brushed against her middle a mere two inches above her belly button. They rested gently atop Celestia’s head, their soft, plush curves brushing along the tips of her ears as Celestia moved her head in tight, slow circles around her sister’s crotch. Luna groaned, her cheeks flushing and nipples hardening as Celestia nuzzled her crotch. She reached around to her breasts and squeezed them, then pressed them down atop Celestia’s head until her sister was smothered between them.
Celestia found herself surrounded by Luna on three sides. Her head forced down by the weight of Luna’s breath, she found herself attacking her sister’s marehood with renewed vigor. Her tongue lashed out, tasting, savoring the intoxicating chocolate flavor as Luna’s plump lips spasmed and clenched around them. Celestia found her hands wandering down Luna’s thighs: one to between her own legs, rubbing at her own burning crotch; the other to Luna’s rear, squeezing and groping that plush, pliable rear.
It was nothing compared to her own, of course. Celestia’s ass stuck up high in the air, a masterpiece of physical form that wobbled and shook every time she so much as twitched. It rippled like jelly as her hips swayed, her whole body moving in time with the tempo her lips and tongue drummed out on Luna’s cunt. But Luna’s ass was still shapely, soft, with an attractive curve that Celestia had always found impossible to deny. Luna groaned, one hand slipping down to curl around Celestia’s, the two groping her rump together as Celestia’s fat own ass wobbled and jiggled in the air.
Celestia’s tongue dove deeper, massaging Luna’s insides. Her sister moaned and swayed up above, her soft breasts heavy atop Celestia’s head. Celestia pressed forward; she wrapped her lips around Luna’s clitoris and began to suck, her tongue darting out periodically to lap up whatever bits of frosting she’d missed. Her chin and cheeks were smeared with it now, streaks of smooth, rich chocolate still filling her nose with a delectable scent long after she’d finished her meal.
She could feel Luna trembling beneath her and redoubled her efforts. Celestia’s thighs squeezed tighter around the fingers in her own cunt, her clitoris seeming to throb with heat and desire. Her chunky thighs had long since grown thick enough as to pleasure her marehood on their own - any evidence of a thigh gap had vanished years ago. Celestia groaned, grinding her thighs together around her marehood as she ate Luna out more fully and completely than she remembered ever doing in her youth.
Finally, she felt Luna’s vagina winking against her lips. Luna cried out, spasming, but Celestia’s grip on her flank stayed firm. Celestia drank down her sister’s nectar, the tangy taste mixing with the sweet frosting as a culinary thrill surged on her tastebuds. Luna’s squeals of pleasure filled her, pushed her, drove her, her little sister’s spasming insides only intensifying as Celestia wiggled her tongue against them.
Slowly, letting Luna’s hot, heavy breasts brush against her ears, Celestia pulled her head away, her chin dripping with Luna’s juices. Her hands pushed up Luna’s sides as she lifted her gaze to face Luna’s. Their hands met beneath Luna’s chest, fingers intertwining.
Luna’s cheeks were flushed, and she was panting. A thin sheen of sweat stood out on her forehead, but she was grinning widely.
“Still got it?” Celestia teased. She licked her lips and winked.
Luna took a deep breath, then wheezed in laughter. “Most...certainly,” she said, chuckling. “Mm. I can’t remember the last time I’ve been eaten out quite so...royally.”
“A thousand years, perhaps?” Celestia raised an eyebrow. For a moment, though, she wondered if she’d gone too far...but Luna just quirked an eyebrow in return and laughed softly.
Her eyebrow went even higher when she caught sight of the chocolate smears along Celestia’s cheeks. “Goodness,” Luna said, smirking. “It looks like you certainly enjoyed your meal.”
“Absolutely,” Celestia said. She caught Luna eyeing the stains on her cheeks and lifted a hand to wipe herself clean - but Luna held up a hand, stopping her.
“Let me get that for you,” Luna murmured. She leaned in close, slipping a hand beneath Celestia’s armpit. Their chests mashed together, Luna’s fingers groping hungrily at Celestia’s shoulder blade. Luna’s tongue darted past her lips to take a sensual lick across her sister’s cheek. She cleaned first the right one, then tidied up the second one. Only when Celestia’s cheeks were dotted with saliva instead of frosting did Luna finally allow her lips to brush across her sister’s. Celestia’s tongue pushed past her lips instantly, their tongues dueling, twisting with a fierce, intimate oneness. Celestia tasted Luna’s hot breath on her mouth and sighed into the kiss, shivering.
“You taste sweet,” Celestia said when the kiss ended.
“You taste sweeter,” Luna replied. “Three slices of cake—you positive glutton, you.” Something in her eyes glinted. “I’m sure that after a feast like that, you’re just dying to wash it all down.”
Something long since forgotten throbbed in the back of Celestia’s mind. Her eyes flickered down to Luna’s chest, and her eyebrows went up. Luna caught her gaze and laughed.
“I am the goddess of the night after all,” she purred. “And what would help my big sister sleep better than a big bellyful of warm milk?”
Celestia patted her round belly. Her stomach felt like a hard ball inside of her, stuffed fuller of sugary treats than usual. Her fingers sank in all the same, and when she smacked her lips, she tasted nothing but rich chocolate once more. “I think,” she said with a smile, “that that sounds like an excellent idea.”
Luna simply smiled in return. Letting her fingers slip free of Celestia’s, she slid both palms around her thighs. She gave her legs a squeeze, then slid her hands up around the curve of her hips, into her waist, then finally around her breasts, her fingers cupping the vast expanse of her soft, globular tits.
Celestia leaned back, resting her weight on one hand. She watched Luna with a smile, her meal gurgling happily in her stomach. For a moment, she let her eyes flutter shut. She imagined the digestion of her sugary snack, pictured the fat from the cakes flowing it around her body. She imagined her thighs growing thicker, her breasts fuller, her ass jutting out further away from the rest of her body. She swayed, humming softly, feeling her enormous butt cheeks squishing against the quilt beneath her. They felt like a pair of pillows, propped up comfortably beneath her rump.
For an instant, she thought she could feel them growing, swelling, spreading out to cover more and more of the mattress below. She could see herself growing taller, curvier, heavier, the bed groaning beneath her weight as she became the most voluptuous mare that Equestria had ever known, and ever would know again.
With a satisfied sigh, she patted her belly. This time, she let her fingers dig into the jellylike expanse of her muffin-top, the soft, doughy flesh of her tummy squishing between her fingers as she drifted further into fantasy.
When she opened her eyes, Luna’s horn was glowing. Her sister hadn’t let go of her breasts; if anything, she’d pushed her fingers further into her bust, oodles of titflesh oozing around her knuckles. Her tits looked...larger, actually, large and round enough to be a match for Celestia’s. Celestia smiled as Luna moaned softly. More than a match, she corrected herself, watching her sister’s jugs swell a little bit larger. Luna kept on kneading them, steadily groping every inch of robust, pliable titflesh that she could reach. And they kept right on growing.
By the time that Luna stopped, her breasts were a good four inches wider in diameter than Celestia’s. Her nipples had more than doubled in size, thick and erect, mounds of perfect black that quivered in the warm bedroom air. They glistened with a soft, almost crystalline shine; Luna gave her right one a squeeze, and moaned when a stream of white liquid streamed across her fingertips.
Celestia found herself licking her lips. She gave her belly a squeeze and planted a soft kiss on Luna’s cheek. “Mm. It’s been too long.”
Luna smiled back at her. “A thousand years of milk,” she murmured, “undrank.” She gave her tit a squeeze, a fresh river of cream spilling out. “Drink up, dear Tia.”
Celestia didn’t have to be told twice. She circled her arms around Luna’s waist leaned her weight forward. The two of them slipped down the bed together, until Luna’s head and shoulders were propped up on a pair of pillows, and Celestia’s muzzle was resting comfortably atop the curve of her bust. Celestia hugged her sister’s middle, nuzzling Luna’s soft bust for a moment before drawing her tongue across the plush, warm surface.
Her lips latched onto the dark, fat nipple a moment later. Celestia applied a touch of pressure, and a spurt of milk rewarded her almost instantly. She drank it down, gulping down thick, warm cream. Luna groaned above her, pressing her head closer into her tit. Celestia moved her fingers around the underside of her sister’s boob and cupped it, squeezing it. It felt so huge in her grasp, swollen and heavy with milk. As she suckled, she could actually feel it sloshing with unseen liquid, a small ocean of nutrition that could as easily feed a family of foals as a gluttonous, sleepy alicorn.
Celestia’s cheeks bulged out as a generous spurt of Luna’s milk filled her mouth. The smooth, sweet liquid flowed easily down her throat. Luna groaned again, kneading her breast and increasing the flow. Celestia felt her stomach swelling with milk, her skin growing taut as she filled herself even fuller. Her earlier fantasies returned briefly, teasing her with images of the fat of Luna’s cream spreading out across her body, thickening it, adding curves upon curves to a body already voluptuous enough to outmatch any other mare.
When the stream slowed to a trickle, Celestia pulled back, licked her lips, and latched onto the other nipple. The cascade of sweet milk filled her mouth once again, washing away the rich, intoxicating taste of chocolate and nuts, and leaving her tastebuds buzzing with a warm, fuzzy sort of drowsiness. White cream ran down her chin, milk beading on her breasts and dripping down to stain the covers below. She guzzled eagerly, one hand moving down to stroke gently across her rounded belly as it bulged further with milk. Luna moaned, massaging her breast and providing her sister with a steady stream of liquid to gulp down. Celestia’s tongue flicked and twisted in wild delight, her stomach growing round and tight against the palm of her hand.
Celestia finally had her fill. She didn’t come up, instead opting to merely let go and turn her head sideways, so that she was nestled comfortably between Luna’s cleavage. Her sister’s bust, still oversized and plump, made for a wonderfully soft pillow on which to rest her head. She smacked her lips appreciatively, and then burped. She blushed, but Luna only giggled.
“Good?” she asked, her voice throaty.
Celestia smiled up at her, her cheeks still red. An overpowering sense of warmth and comfort had begun to spread through her body. She nuzzled against Luna’s breast, curling her arm around her sister’s waist. “Delicious,” she murmured. Her tongue flicked out to dab a drop of milk off her cheek.
“Always good to hear,” Luna replied. Her smile turned up into a pair of dimples, which were a rosy, flushed red. “Would you consider your evening snack complete?”
Celestia sighed happily. A sense of satisfaction filled her, the afterglow of orgasm mixing with the stupor of a feast well-eaten. She patted her belly and felt its taut curve bulging beneath her fingertips. “Very much so.”
Luna chuckled. Snaking her hand across Celestia’s chest, she gave her older sister’s tummy a pat, giggling when she felt the volume of milk sloshing within. “Perhaps I should put you on a complete cake-and-milk diet. I’d love to see if we could get your curves a little, mm, thicker.”
Celestia yawned. Her eyelids had begun to feel awfully heavy, satisfaction mixing with drowsiness as her body, full and happy, began the process of shutting down. “That’d… Could be nice.” She rubbed her cheek against Luna’s boob, squishing it against her muzzle.
Gently, Luna removed her sister’s head from her chest. “I’ll speak to your chef tomorrow,” she said, in a tone that betrayed neither mischief nor earnestness. “But in the meantime, it’s late, and you need to be up bright and early for your subjects.”
“Mm.” Celestia’s eyelids fluttered. Her head slid onto a pink fluffy pillow that was drowning in ruffles and sank into it. “Got to...get some sleep.”
“And I need to finish getting these taken care of.” Luna glanced down at her breasts mournfully; both were still a good inch wider than Celestia’s, with a trickle of milk going down each round areola. A smile twitched her lips. “Perhaps I shall see if there are any stallions in the Night Guard interested in pleasing their Princess for a night.” She licked her lips. “Perhaps they need to be reminded of the pleasures of an alicorn’s flesh, after so many centuries of ignorance.”
Celestia barely heard her. Her eyelids felt so heavy. But she heard Luna’s words echoing in her ears and smiled, her sister’s voice a welcome comfort that slid her further into relaxation.
“You...do that,” she murmured, cuddling into her pillow. “Mm. Good night, Luna.”
Luna reached down and gave her a peck on the forehead. “Goodnight, Tia.” Silently, she slid off of the bed, replaced her somewhat disheveled dress, and made for the door. Before she left, she took one last glance over her shoulder and smiled at her sister’s slumbering form.
Then her horn glimmered, a dark, starry blue. The lights flicked out, and the door clicked shut, leaving Celestia fast asleep in the night.
