Tia's Troubles

Celestia was proud of her sister, and all that she had achieved in her time as acting ruler. Both sisters were happy to allow each other to carry on as they had been for some time now. But that didn't give the princess of the Sun an excuse to not keep up her exercise regimen, which consisted of making a visit to the palace gym every other day.

However, while the two sisters didn't have a problem with the situation, they agreed that this couldn't go on forever.

“My dear Luna, I'm so proud of you and all you've managed. Sometimes I think you'd do a better job than me!”

Celestia wasn't being serious, she was just trying to praise Luna, but her sister suddenly looked worried.

“Please Celestia, I couldn't possibly take this away from you, it was what you were born to do! Don't step down!”

Celestia laughed aloud.

“I was only joking, Luna. Just trying to give you some idea of how well you've gotten on. It's coming up to a year now, isn't it?”

Luna, now smiling, nodded.

“Okay, well, the first anniversary of your role as regent ruler seems like a good occasion for my return, does it not?”

Luna beamed, and nodded again.

“Certainly!”

“Well then, that's decided. This carefree life is nice and all, but I'm starting to miss everything I had before. The grass is always greener on the other side...”

She looked into the mirror on the opposite wall, taking in her voluptuous curves.

“I hope my subjects aren't too bothered by my rather dramatic transformation.”

“I'm sure they won't. The men certainly won't anyway. I think you look positively ravishing, sister. It suits you!”

Celestia blushed ever so slightly, not enough for her sister to notice.

“Thank you, Luna. I think you're right. Well, enough idle chatter. I've got some working out to do.”

She smiled, and turned, heading down the corridor to the gymnasium. Luna was mesmerised by the rising and falling of her sister's substantial ass packed into sweat pants that seemed a size too small.

“Gosh, what I wouldn't give for a body like that.”

Celestia sauntered over to the exercise mat, gazing at herself in the mirrors that ran the length of the gym. Her pristine, prismatic hair flowed around her shoulders, and her bright violet eyes stood out from her flawless, pale complexion. Her gaze moved inexorably downward, and she watched as her full, globe-like rear rose and fell with each step, and her boobs, straining against her bra, filled out her t-shirt and almost covered her navel. She stopped by the mat, her ass continuing to bounce briefly with the momentum it still carried within its immense expanse. She looked down at her legs, her thighs bulging, packed tightly in the sweatpants. The problem with having huge thighs was they rubbed against her nether regions and her over-sized clitoris, which was currently throbbing faintly.

“Damn, I need to take care of that later... I feel like I'm going to explode. But these pants may explode first. They're getting too small already, and I only got them 3 weeks ago!”

She made a mental note to 'satisfy' herself later that night. But she also felt she needed someone other than herself to make her feel even better. There was no shortage of more-than-willing subjects that would do anything to please her, but she didn't want to dive on to the first guy that openly showed interest.

“He's gonna have to be well-equipped, these curves of mine need a whooole lot of loving...”

And that sure wasn't an overstatement. Her body was huge - she was tall and curvy even before her weight gain, but now, her figure was deliciously filled out. Only the largest member would satisfy such a full figure. Of course, if he was sweet and cute that would be a plus. But in her current state of mind she really didn't care too much about that. She needed a cock - the biggest she could find. These thoughts were making her more and more pent up. Her fat, throbbing clit was now visible through the tight pants. She shook her head rapidly, trying to clear her mind, and spoke aloud.

“Get a hold of yourself, Celestia! There is a time and place for thoughts like those. But these damnable urges! it's getting hard to keep them under control.”

She couldn't remember the last good sex she had. Not only was she unsatisfied with the size of the average Equestrian penis, she simply hadn't had the time for any meaningful sexual relations with anyone. Life was far too busy. But with the sudden excess of free time she now had, she could finally seek out some kind of sexual gratification, other than her own hands. Masturbating was all well and good, especially with her huge and ever-expanding tits and nipples which, when hard, were the size of quarters that she could fondle to her heart's content, but it fell short of the real thing. But enough teasing herself with what she'd do tonight, she had a work-out to be doing!

First up was lunges. She took a pair of small 5 kilo weights from the rack and held them by her side. The little weights in her little hands looked quite comical beside her expansive hips and impossibly globular ass. It was almost as if she had stuffed two over-inflated basketballs down her pants. But basketballs didn't jiggle and wobble like her rear did.

Celestia widened her stance slightly, stepped forward with her right foot, and dropped slowly into her first lunge. Her left thigh pushed up against her left ass cheek, compressing the globe of meat and forcing it up and outwards, while her right cheek curved down and underneath. The position of her lower body put extra strain on her already-tight sweatpants, and they squeezed her hips. Almost inaudibly, the seams along the sides gave way a fraction as her thick hips forced their way through the surrendering fabric. Celestia froze, looked at her hips, and blushed slightly. This angle really showed how wide she'd gotten. Her hips swelled out a few inches from her side before the gentle curve back in to her waist. But she couldn't see much of her waist because of the thigh flesh bulging out.

Cautiously standing up straight again, Celestia replaced the weights on the rack and walked up close to the mirror to survey the damage her hips had caused. Turning side-on, she saw a series of small gaps where her hips were widest, and little globules of flesh forcing their way through the holes. It wasn't serious, but it drew attention to her already breath-taking hip flare. She decided that lunges would have to be put on hold until she got some (even) bigger sweats. So, it was over to the chest press machine. As she walked over to it, she looked down at her chest-pillows bouncing up and down, almost touching her chin when they rose up. Even though she was wearing a high-neck t-shirt there was still some cleavage exposed. Her breasts protruded so far from her chest that they pulled the shirt outwards, exposing the very top of her breast shelf. Her breasts were all-natural, but maintained an enviable firmness, even when she was bra-less. They did tend to get in the way in bed, though. If she laid on her back, they touched her chin. This wasn't caused solely by the sheer size of her boobs, but her big ass raised her lower half up an inch or so when she laid on her back, making her tits roll downward slightly, putting them beneath her chin. In the summer it was a pain, but in the colder months they could be nestled into.

Her breasts were large enough for her to easily lift her nipples up to her mouth. The feeling of suckling on a nipple alone was orgasmic, and their sensitivity never ceased to amaze her.

A slight look of concern crossed her face.

“Let's hope I don't tear this shirt too.”

She eyed the chest press machine and wasn't impressed. Maybe this time last year it would have sufficed, but her wide rear was much larger than the seat. At least having huge, soft ass cheeks made virtually any surface comfortable. This particular machine had the handles mounted either side of the seat, and would come up just below her shoulders when pulled back. They wouldn't have come up quite so far when she was smaller, but now all the junk in her trunk rose her up an extra couple of inches when she was seated.

Before even starting, she could see there was going to be a clearance problem between her jugs and the grips. The space between the bars they were attached to seemed a little too narrow. Still, not willing to quit before trying, she slowly exhaled, grasped each handle, and drew the bars towards her. The effort made her thrust her chest out slightly, her big nipples tenting the shirt that clung to her giant bosom. As she feared, before she could pull the bars all the way back they were blocked by the sides of her breasts, so she could only perform about two thirds of a full press.

“Dammit, why do my tits have to be so huge?”

She frowned at one of her monster knockers, then the other, then sighed and rolled her head back. The creases of irritation dissipated from her forehead. She thought to herself; sure, having massive tits caused a few little niggles, but it felt so fulfilling, so empowering, to be gifted with such incredible breasts, let alone the rest of her unique body.

It was apparent to her that this machine was really built with a smaller person in mind. The narrow cushion looked positively tiny beneath her immense buttocks, and of course there was the issue with her breasts and the bars. Still, she finished her two sets of 50 presses each, rested briefly, then lifted herself up.

She turned, and noticed the seat was a little damp. She looked over her shoulder at her butt. With an inquisitive look, she ran a hand along the crease between her cheeks. The supple flesh parted as her fingers traced along the deep crevice.

“Wow, it's like a furnace back there.”

She wondered how she could cool herself down. She glanced mischievously at the mirror. There was no harm in having a little fun, was there? Especially when she was alone.

“Ah-ha! I'm sure no one will notice...”

She pulled her sweats down over her ass, and then her underwear. She looked around quickly, and, satisfied no one was nearby, backed her bodacious bubble butt up against the mirror's surface. Her soft cheeks spread out across its surface.

“Eep!”

Her eyed widened, the mirror felt ice cold! Soon her shock turned to relief as she felt the heat in her rear fade away. She pulled away from the mirror, and with some difficulty stuffed her over-sized posterior back into its cloth prison.

She looked back at the mirror and gasped quietly, covering her mouth with her hand. The area where her butt had met the mirror was clearly shown in two large, near-circular areas of sweat that clung to the surface. What surprised her was the sheer size of this area; it was just under two feet across.

“Goodness, how big have I gotten?”

She groped each cheek in her hands, and was once again amazed, not only by their immense size, but by how soft and pliable they were.

“Hmm. Very big, it seems.”

After getting a tiny bit carried away and squeezing her mounds of meat for a little longer than was necessary to judge their size, she remembered she still had her squats to do.

“This can't end well for these pants. But screw it, I need a bigger pair anyway.”

Returning to the mat, she stood with her feet apart, hands clenched into fists by her sides. She looked back again at the mass of ass extending out from below her back, and hoped it wouldn't obliterate her pants too quickly.

Carefully, cautiously, she bent her knees and kept her back straight as her butt descended towards the ground. If anyone had happened to be underneath, it would appear as though the apocalypse had come, and a gigantic asteroid not dissimilar to the one that wiped out the dinosaurs was going to crash straight on top of them.

Celestia was relieved to find that she had completed a full squat without tearing her pants in two. But what wasn't obvious was the fact that the seams were very close to giving way, and it wouldn't take much more persuasion for them to give up and split apart from the unrelenting tidal wave of flesh pressuring them, squeezing between them, pushing against them. The already-weakened seams along the hips of the pants weren't fairing too well either.

Unaware of the life-or-death struggle between her ass and her pants, Celestia continued to squat, with each descent spreading her wide ass cheeks and making her long butt crack even more obvious. Each time she rose back up to a standing position with quickness, her cheeks would give a little jiggle, and her boobs would give a little bounce, before settling into place. Then the process would repeat, and her butt would slide downward, extending out. Perhaps having such a heavy weight behind her would have caused difficulty with keeping balance, but her 42L breasts were also very heavy, and stopped her from falling back. Not that it would hurt if she did with her built-in cushions.

After a set of 30 squats, Celestia realised she wasn't feeling a burn like she usually did. She looked down and over her jutting chest, and noticed her feet were fairly close together. She widened her stance again in an attempt to get a deeper, fuller squat, and bent her knees.

This wider stance increased the width of her lower body in the squatting position, her cheeks pulled further apart by the action. This was the breaking point for the pants, they couldn't take any more punishment. Slowly, with each squat, they weakened a little more. By squat number 24, they finally gave up.

RRRIP!

A huge tear opened up between her cheeks nearly the full length of her ass, and a gash opened up along each hip, flesh forcing its way through. A little embarrassed, but giggling, Celestia quickly straightened herself.

“Well, pants, you put up a good fight. But not good enough, I fear.”

She approach the mirror to survey the damage. The tearing loosened the pants and made them more comfortable, but that wasn't really enough to justify wearing them in this state. Half a foot of ass cleavage was visible through the tear at the back. She raised an eyebrow.

“If I keep growing like this, I'll having nothing that will fit me any more. I need to see Rarity, and fast.”

She tiptoed out of the gym and back to her chamber, hoping no one would see what she had managed to do to her clothing. She slid the sweats over her butt, the waistband still giving her a hard time, and held them up in front of herself. This really was the final straw, she had to overcome her fears and see a tailor. At least Rarity was a friend, and being exposed to her would hopefully be less awkward.

“No point putting it off any longer, I'd better get down there tomorrow.”