My Stepsister's Appetite - 02 (Patreon)

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Contains: Breast Expansion as Weight Gain

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Part 2

When our parents got back from their trip, Tabitha and her mom got in a big fight. When I heard their voices raised I hid in my room, but I still could hear the occasional shout of words like “size” “whore” and “diet.”

Tabitha left the next day. Sharon said she moved in with one of her friends, and would say no more on the topic. It took almost a week for Tabitha’s mom to remember to make half as much food to account for her daughter’s absent appetite.

It was nearly March when Tabitha’s friend Jeanie came by my work. She was wearing a baseball cap and big sunglasses like an MCU character in ‘disguise.’ She dropped her sunglasses slightly so I could recognize her, then laid a small pink envelope on the counter.

I picked it up and saw my name scrawled in what I recognized to be Tabitha’s handwriting.

“What—“

Jeanie was already gone.

Hands shaking I tore open the seal on the envelope. A matching pink card was inside with a short letter.

Dear Stepbrother,

As you probably guessed, I’ve been staying with Jeanie. I started a new business though and I’m getting my own place. If mom asks tell her I’m happy with my choices and she can’t control me anymore.

Actually, just tell her I’m doing fine.

And speaking of fine, I think the effects of your “special supplement” are wearing off. I can’t eat half as much as I was before I moved out, and none of my pants fit.

You can tell me where you bought it — or — you can come visit me sometime. Here’s my new address, don’t tell my mom.

Love, Tabby

PS — There’s a present for you in the envelope.

The address on the card was just a few blocks from my work. I picked up the torn envelope and pulled it wide to check its contents again. There was a small square of fabric inside. I pulled it out and inspected it. It was a clothing tag. One side was printed with washing instructions, so I flipped it over, barely able to keep the scrap of fabric held between my trembling thumb and index finger.

32 R

I took an extra long restroom break.

***

It wasn’t until I was back at home hiding Tabitha’s card and ‘gift’ in my bottom drawer when I noticed more writing on the card’s back. It was a website address, with the note:

*Use the coupon code ‘stepsister’ if you want~ *♡

Taking calm, deliberate steps, I crossed the room to lock my door. I fired up an incognito tab and typed in the address on the card. It was Tabitha’s OnlyFans.

I generally made do with what I could find online for free, but I couldn’t resist the temptation. I made an account, punched in my credit card info, and only hesitated briefly when I had to type the word ‘stepsister’ to get 20% off.

There was no full nudity on Tabitha’s page. But the amount of lingerie, bikinis, and ‘hand–bra’ photos and videos were enough that in just a few scrolls I was pleasuring myself for the second time that day.

During dinner I could barely hold a conversation as my mind kept wandering to my stepsister’s face and body. I excused myself as soon as I could and dashed back to my room.

“–Mmmm– this cake is so good…”

Tabitha’s voice moaned in my headphones as the video played.

“It’s so many calories though… I’m gonna outgrow this itty bitty bra if I keep eating like this…”

Tabitha’s index finger stroked the lace cup of an enormous bra. I didn’t recognize it but could tell it was much larger than the one she’d worn on our ‘date.’ The video was almost two weeks old and the flesh of her massive breasts spilled over the cups and brushed her knuckle as she fingered the lingerie.

“–Homf– I’s jus’ sho goo I ca’ hel’ myshelf…”

I broke my personal record that night. Good thing tomorrow’s my day off.

***

I made some lame excuse about meeting up with friends and drove downtown to find Tabitha’s new apartment. I knew where the building was so it didn’t take long.

“Hey!”

Tabitha swung the door open and pulled me into the apartment with a hug. The crush of her stupendous breasts knocked the wind out of me. My stepsister held me for just a moment longer than was proper, then stepped back.

I couldn’t stop staring. She was wearing black yoga pants that showed off every curve of her legs, and I could see she was right— with the HungerCup wearing off she was starting to put on weight in her lower half. If anything the added inches made her even more gorgeous. Her black tank top was cut short and I could see a big slice of soft tummy. It wasn’t quite chubby yet, and I wondered if getting her back on the HC would make her lose the new curves. The coup de grâce of course was her chest. She was nearly two cups bigger than the last time I’d seen her in person, and I could see the clear shape of her nipples through her double tank tops. My stepsister wasn’t wearing a bra.

Eventually my eyes drifted back up to Tabitha’s face, where I saw her watching me with a mischievous smirk. I’d been staring at photos and videos of her every waking moment since yesterday afternoon, but seeing her in the flesh made my pants tight despite my recent marathon.

“Hi stepbrother… I’m glad you came.”

If I hadn’t already relieved myself twice that morning, I might have done just that.

“Did you bring something for me?”

She looked down at my crotch, then over at the brown bag in my hand. I raised my arm slowly and handed her the package. Tabitha pulled the plastic jar from the bag and examined the label.

“Hunger Cup? I figured it was some Madsgenix product… That’s all I could find when I googled my condition last year…”

She turned the jar around to read the back.

“What is this, Polish? Swedish?”

“I, I’m not sure, actually. The English directions are online…”

“Trust you to find some illegal knock–off breast growth supplement… such a naughty boy…”

My ears felt hot, I was certain my whole face was red.

“Well I can’t argue with the results.” She said, hefting one flesh watermelon in her hand and letting it drop. I couldn’t tear my eyes away as I watched the pale orb wobble and jiggle, riding full and firm on her chest despite her lack of bra.

“So how much of this stuff were you dosing me with?”

“It was half of your protein powder.”

Tabitha did some math and figured out how much HC she’d been taking.

“Okay, I should probably stick with that then, or maybe a tiny bit less. My subscribers really like me growing, but I don’t want to grow too fast…”

I tried to swallow and found my mouth completely dry. Tabitha was already mixing the powder into a glass of milk. She eyed the glass greedily as she brought it to her lips.

“Though this stuff makes me soo hungry…”

My stepsister’s teasing videos were amazing, but no substitute for the real thing.

“As long as you’re here, maybe you can help me.”

“H–help you?” I stammered.

“I have to get more photos for my OnlyFans, and it’ll go way faster if I don’t have to mess with the tripod.”

She stepped close to me, her massive jutting breasts inches from my chest. She batted her lashes coyly.

“Will you be my cameraman, stepbrother?”

***

Tabitha’s OnlyFans account was definitely doing very well. Her apartment was a two bedroom, and she’d set up the second as a studio. Outfits hung on hooks and there was a shelf unit covered in various props. I could tell the camera she handed me wasn’t cheap. I’m no expert but it had heft to it and was clearly well–made. One wall was covered with a green screen panel, and I tinkered with the camera while my stepsister changed, taking test shots and experimenting with the controls.

When Tabitha returned to the studio I nearly dropped her fancy camera. Her bikini was light blue with orange shapes and dark blue leaves. I could have used one of the triangles of fabric as a hat, yet my stepsister’s breasts were spilling out the sides and bottom of the massive swimsuit. I was so distracted by the top that I almost didn’t notice the tiny g–string that left her whole ass bare and only just covered her crotch.

“Just take a bunch, I’ll go through them later.”

Tabitha stood in a variety of poses while I snapped photos of her in rapid fire. We repeated this process with two more bikinis. After we’d been at it for several hours, she stopped.

“Close your eyes.”

I looked up from the camera’s viewfinder.

“Huh?”

My stepsister put on her most sultry voice yet.

“I said cover your eyes, stepbrother.”

I did as she asked, and waited. A few seconds later she spoke again.

“Alright… open.”

I didn’t breathe for several seconds, but I recovered myself and started taking pictures again. Tabitha had untied the top strap of her bikini, letting it fall down her front. She was covering her nipples with her palms. In various poses she would move her hand until just three fingers covered her areola, but she moved so expertly I never got to see the actual nipple.

With her hands on them it was even more apparent how big my stepsister’s breasts had grown. It was like a child trying to palm a basketball. Despite my body’s fatigue, I could tell I was reaching my limit again, watching Tabitha’s body jiggle and sway as she moved from one pose to another, making bedroom eyes and flirty winks at me through the camera’s lens.

Finally, Tabitha turned her back to me and put on a fuzzy pink robe, tying it closed. I could see the shape of her hardened nipples through the fabric, and it almost sent me over the edge.

“I’m getting kinda hungry now… I’m gonna set up for a video so you should probably get going.”

She stepped up close to me again, her breasts pressing into my arm as I held the camera stiffly. She met my eyes.

“Do you need to use my bathroom before you go?”

I shook my head wordlessly.

“Okay then!” She stepped back and held out her hand for the camera.

I handed it to her and she led me to the door.

“There should be a new post on my page later tonight. If I find any that are too spicy I’ll DM them to you…”

On the drive home I wished I taken her up on the offer to use her bathroom.

***

After that initial wave I managed to calm down a little bit. I fell back into my normal routine, only now I was only checking one website in my ‘personal time.’

Tabitha’s OnlyFans was growing even faster than the girl herself. I predicted correctly that going back on the HC made her tummy flatten back down, but her hips and bubble butt were here to stay. Every day she posted sexy, flirty photos, and every 2–3 days a video. Most were just normal teasing, but once in awhile she’d be eating, and ‘complaining’ about how tight whatever top or bra she wore was getting.

About a month after our photoshoot, Tabitha texted me.

[Hey, you busy tonight?]

{Nah}

[I’m bored and my new S–cup is on its last legs. Wanna bring some snacks over and feed me out of it?]

I broke many traffic laws on the drive over. I fat–fingered several DoorDash orders on my phone while filling a cart with baked goods at the grocery.

Tabitha was waiting for me in a lingerie set I’d previously only seen in photos. All white ribbons and lace with tiny bows, and more than a little areola showing through the transparent cups. She eyed the rows of grocery bags I carried on each arm and licked her lips.

“Come on into the living room stepbrother… I’m starving.”

She dropped onto the couch and kicked her feet up on the ottoman. I spent a moment appreciating her improbable figure at this unusual angle.

“Am I gonna get some food or were you planning to stand there ogling me all night?”

I almost tripped over myself dropping the bags and fetched a box of donuts, holding it out to her. Tabitha’s arms didn’t move, she only tilted her head back and opened her mouth.

“Aaaah”

I plucked a donut from the box. Nearly all the powdered sugar fell off it my hand was shaking so badly. In four bites the donut was gone, so I grabbed a second.

I calmed down as we fell into a rhythm. When the pastries were half gone the first DoorDash order arrived. It was a dozen tacos. Before she’d eaten all those, an order of five cheeseburgers arrived. Then two pizzas, family size orange chicken, three poke bowls, and an entire cheesecake.

I was careful not to touch her as she ate, but as the last of the takeout passed her lips, my stepsister was starting to moan and rub her distended belly. She was almost as big as she’d gotten at the buffet.

“Will you give me a belly rub, stepbrother?” She asked huskily.

I put one hand then the other on her food stuffed orb. She looked about to pop, but reached out one hand for an unopened box of cupcakes. As I stroked and fondled her bloated gut, I could feel it swelling under my hands as she continued to eat.

The delicate lace bra was strained so tightly I could hear it making little creaking sounds. I couldn’t tear my eyes away as Tabitha slowly pressed one cupcake after another down her throat. At last the threads on one shoulder strap tore, the cup rolling down to reveal one rock hard nipple the size of my thumb. My hands stopped massaging and my body shook.

Tabitha met my eyes. She was wincing at the pressure in her stomach as she said,

“Thanks for dinner, stepbrother… I’m so glad you came.”