Heather stretched, yawning. On these lazy Saturdays, Heather liked to stay in, not even bothering to get dressed. She lazed around the house all day, rarely putting on anything more than a pair of panties. As she gained more flesh on her once scrawny frame, her old underwear was feeling tighter across her lower belly and her widening butt. That’s why she preferred to just walk about in the nude. Since Justin’s parents were usually away on business and Heather’s parents didn’t mind Heather spending all this time at Justin’s, she seemed to spend more time naked than not.

Justin looked approvingly at his big, beautiful girlfriend. Since she’d escaped from fat camp, her parents hadn’t given her any more grief about her size, instead accepting that their daughter was a growing girl. Heather rolled over in bed, smiling her trademark lopsided grin at him. Her firey red hair fell over her fleshy shoulders. As she sat up, Justin spied the equally bright red hair surrounding Heather’s exposed vagina for a split second before her pudgy tummy rolls spilled over it and blocked his view.

“Come back to bed!” purred Heather, motioning Justin closer with a pudgy finger. She patted the bed next to her grinning. At her increased weight, Heather sank deeply into the mattress. When Justin sat down, he immediately tipped over, falling into Heather’s lap. They both laughed. Justin buried his face in Heather’s chubby tummy rolls and blew a raspberry.

“Stop it!” Heather giggled and pushed him away. “I’m very sensitive there! One of the unfortunate side effects of my new size.”

“Unfortunate?” said Justin. “Hardly!” He tickled her lightly across her rounded gut. Heather shrieked and tumbled backwards, hopping out of bed. Justin marveled that Heather was so light on her feet for a big girl. Her tubby body bounced and jiggled as she skipped across the floor, especially her globular butt cheeks. Even now, her booty was her most prominent body part.

“Oh, Justin, can you believe how lazy I am!” she gasped as she caught a glimpse of the wall clock. “It’s after one and I’m not even dressed!”

“So?” Justin smiled. “It’s a Saturday.”

“Yes, but I feel like such a bum!”

Justin leaned over and caressed Heather’s ample bottom. “I feel a bum, too!”

Heather made a face. “Ha ha. Now, seriously, I haven’t worn a stitch of clothing since nine last night! This is what happens when we spend the night in. And I’m supposed to see Shelly this afternoon too.” She bent over, giving Justin an eyeful of her plump rump, and scooped up a pair of her discarded undies. She pulled them up her thick legs and over her meaty thighs, and stretched them around her bulging belly and bloated buns. The elastic waistband of the snug sea-blue garment bit into the yielding flab of her gut, compressing the flesh beneath it and allowing the flesh above to spill over it and obscure it. Behind her, the material strained across her generous butt, so much that her ass crack was visible as a darkened line down the middle of backside. Heather playfully grabbed the backside of her panties and gave them a quick tug upwards.

“No peeking!” she scolded Justin. “I think it’s time I invested in the next size. These things are getting so tight!”

“All because of that cute little belly of yours,” said Justin, motioning Heather to come closer. Heather walked over, tubby tummy swaying. Justin placed his hands around Heather’s substantial girth and gave her new love handles a squeeze.

Heather snickered. “Cute? Yes. But little? Not on your life!” She inhaled, forcing her mound of a stomach out as far as she could and filling her cheeks with air. Justin poked her midsection again, causing her to laugh and expel the air.

“Enough of that. I need to get dressed and then I need to eat.” She patted her prominent tummy. “And when I say eat, I mean EAT.”

Justin traced a finger over her chubby stomach. “Are you going to eat before breakfast?”

Heather struck her “I’m a naughty girl” pose. “Weeeeell, I really shouldn’t…” Her eyes strayed to an open box of bon bons on the bedside table. They hadn’t QUITE finished them last night. “But okay!”

Heather flopped back down into bed, causing the whole mattress to sag under her increased poundage, and opened her mouth dutifully.

“Uhhh!” she said, pointing at her mouth. Justin knew what she wanted. Her picked up a chocolate and dropped it in Heather’s mouth. Smiling, Heather chewed it up.

“You like that?”

“Mmmmmm,” murmured Heather, closing her eyes. “Feed me another, Justin.” She opened her delicate mouth. Justin placed another bon bon on her tongue and Alice slowly, deliberately chewed. Heather sighed and arched her back, thrusting out her hefty boobs.

“Don’t stop till I pop,” giggled Heather through a mouthful of chocolate. She felt herself grow moist, then wet, at the thought, and she moved her legs against each other with a quiet slurping sound. Justin popped another in her mouth and Heather swallowed it with a throaty purr. It was good!

“Mmm, more,” demanded Heather, opening her mouth wide for Justin to drop in another chocolate. “More.” Heather’s pudgy tummy bulged out with all the chocolate she’d already eaten, but she couldn’t help herself. It was tasty, after all.

Justin ran his hands along Heather’s soft, pudgy torso, around her voluptuous juggs and down her luscious thighs, then across her large, billowing paunch. Heather squirmed at his touch.

“Say it, Justin. You know what I like to hear…”

“Well, Heather, you have a nice little tummy here.”

“Little?” Heather was disappointed.

“No, not so little. It’s gotten much bigger than it used to be. You were a tiny little twig in the old days, but now you have a nice womanly tummy. Have another chocolate.”

“Mmmmm. More.” Heather gulped the chocolate down the moment Justin placed it in her willing mouth.

“More. Mmm. More!”

Heather’s belly pushed against her overloaded underwear with increasing force. The waistband was digging into her tender flesh, leaving angry red welts all around her middle. The entire front of her undies was dark with her secretions.

“More!” Heather almost snapped at Justin’s fingers in her eagerness to get at the next chocolate. “More! Mm! More!”

Justin’s free hand massaged Heather’s stuffed gut

Justin slowly moved south, tickling the lower curve of Heather’s bloated potbelly, pausing briefly to lizard lick the inside of her deep, dark navel. Heather sighed contentedly as she felt him touch her pubic mound. Her tight blue panties were soaking wet with desire, and she felt slightly uncomfortable sitting in a puddle of her own juices. Justin fingered the fringe of her belly, hanging over her confining knickers, and easing in and out with each excited breath. Heather was feeling a tad full now, but she was just too caught up in the rhythm of eating and the heavenly taste of this sinful chocolate to notice.

“More!” she gasped. “MORE!” She gulped down another candy.

SNAP! The elastic of her overstuffed undies burst, and the fabric tore right down he middle, from her deep navel to her crimson pubic hair.

“More! I mean..Oops!” Heather startled out of her eating trance for a moment to look down at herself. She couldn’t quite see her exposed crotch due to the swollen mountain of her puffy abdomen, but she knew from the sudden feeling of release around her middle that she’s popped her panties open. “Guess I ate too much,” she giggled. She shifted her weight slightly. Her expression changed suddenly. She looked quite pained.

“BUUUUUUURP!” Heather opened her mouth and let loose a massive belch. “Sorry,” she giggled, “I just couldn’t hold that anymore. Gosh, I guess I’m not being very ladylike. I’m such a pig!” She sighed contentedly and patted her swollen tummy. “Can you believe I used to be such a twig? BURP! Oh, excuse me. Now I’m belching up a storm and busting panties. And look at this ass!” She rolled over, sticking her massive bubble butt up in the air.

“Justin, peel these panties off my buns, will you, honey? Now that the elastic’s broken they shouldn’t give you any trouble, and I just feel like being naked again, okay?” She wiggled her big booty for emphasis.

Heather was late in meeting Shelly that afternoon.

“I suppose that’s a legitimate excuse,” said Shelly when Heather explained. “But really, the least you could do is call!”

Heather shrugged sheepishly. “Sorry, I guess I just lost track of the time.”

Heather and Shelly were sitting at a table in the food court of the local mall. Shelly had started to drop weight since her and Heather’s little binging session all those weeks ago, but there was no denying that she was a big girl. Heather, on the other hand, had absolutely ballooned. She was practically unrecognizable as the skinny little twig she’d used to be. Now she barely fit into the chair, her large bum – still her biggest asset – spilling out of the back and sides. Her hefty thighs and meaty legs balanced that out, and on top Heather now sported a pair of heavy tummy-slapping knockers. Heather had dressed in t-shirt and spandex biker shorts for this meeting, mostly because she liked the way the clingy material showed off her curvy buttocks. Her t-shirt still fit her, although her bigger breasts were pressing tightly enough through that you could see the imprint left by her nipples. Shelly rolled her eyes; Heather had often gone braless when she was a flat scrawny petite thing, because she could get away with it. She still didn’t seem to realize that big buxom babes didn’t have the same advantage.

“You really should have worn a bra, you know,” hissed Shelly. “People are looking at us.”

“Let them look,” said Heather nonchalantly, sitting up straight and puffing out her chest even more. The nipple dents swelled slightly.

“Look, I know you’re proud of your new hooters and all, but don’t you need support? Doesn’t just walking around without a bra hurt – you know, with those puppies bouncing around?”

“Errr…yeah…but…C’mon! They look so great!”

Shelly sighed, leaning back in her chair. “Whatever floats your boat, Heather. You freak!” She grinned.

Heather laughed. “Look, Shelly, I’m happy with the way I look. I know you don’t understand why anyone would want to be bigger, but I really feel like a real woman for the first time. After all those years of just being the skinny flat girl, I’ve got real curves! Look at me!” She waved her hands at her own expanding body, taking in her thick thighs and meaty torso. “And I have to admit, I’ve even started liking this enormous booty I’ve got!” Heather slowly lifted herself out of her chair – which wasn’t easy at all, her bum was almost stuck between the handlebars – and turned around. She bent over and aimed her swollen buns at Shelly, giving them a little shake for emphasis. The green stretchy material of her biker shorts was doing all it could to hold in the gigantic fleshy orbs of Heather’s tender round ass lobes. Her cheeks were so round and perfect that they seemed to stretch out forever, way beyond the sides of her torso, and the green fabric of the shorts was almost translucent from the strain. The rear seam going up the back of the shorts divided the cheeks of her butt, sinking slightly in at her ass crack, and the tension the stitches in her seat were under was obvious. The faint outline of Heather’s thong panties underneath was also visible.

“Argh!” said Shelly, shielding her face. “Put that thing away! If you blow a seam, you might take out an eye!”

Heather giggled as she returned to her seat, slowly lowering herself down and wriggling her enormous rear between the seat’s handles. “You have no idea how happy this massive behind of mine makes me!”

“You’re a freak, Heather.”

“And I love these huge juggs, too!”

“I’m sure you do.”

“And this tummy! Look how big and soft it is!”

“People are looking, Heather.”

“And that’s a bad thing? You should learn to accept your body as well, Shelly. That lumpy sweater does not suit you.”

Shelly looked down. Unlike Heather, she tried to disguise her extra pounds with a baggy sweater and a pair of loose long pants. “You’ll understand why after you’ve been big for longer,” said Shelly.

A pair of middle school boys walked past, glanced at the two fat girls, and continued on, giggling. Shelly rolled her eyes.

“See? That’s why I hide my weight.”

“Oh, you’re paranoid. They could have been laughing about anything.”

“Like that busted seam in your crotch?”

“What?” Heather looked down. She had spread her legs and leaned back, not thinking, and the stitches in her crotch had come apart. Luckily, nothing was on display except the plain white cotton of her knickers, but still…

Heather laughed, flushing red. “Well. I guess they could have been laughing about that. But that could happen to anyone, not just us fat chicks.”

“Really? Do you think supermodels split their pants very often?”

“Well, didn’t Christina Aguilera do it once? Or twice?”

“Okay, maybe superstars who wear ridiculously tight pants…”

“Like mine?”

“Er..yeah.”

“My point, Shelly,” said Heather, leaning forward and causing the split in her crotch to gap wider, “is that anyone can rip their pants, especially when they have a booty like mine. Don’t take it so personally.”

“Fine! Whatever. Does that mean you want to stay here with your underwear out there for all the world to see?”

Heather smiled. “You got me. Let’s get out of here.”