Saturday

“I can’t stand that girl anymore!” the young witch, a senior in high school, shouted. “Bullying me, calling me ‘cow’ because I have big boobs? Like I asked for them! Sure, I could have used magic to grow them, but I didn’t!” Then an idea struck her. “Maybe I should make HER grow big tits so she can see what it’s like!”

Alice looked around her room for her spell book. It has to be around here somewhere. Luckily, her parents were out of town for the weekend so there wouldn’t be any interruptions. “Aha! Here it is. Now, transformation spells…” she paged through the thick tome, looking for just what she wanted.

“This one should be good,” she said, hunching over the book, “a spell that will make her grow any time she passes someone bustier than her. She’ll be an F cup by Monday.”

Monday

I wonder where that little cow is, thought Julia. Oh, there she is. Look at those things! No one should have tits that big… except me. I wish I had tits that big.

Julia, a lower-ranked cheerleader despite being a senior, walked by Alice. “Hey co-” her sentence was cut short when she was struck by an odd feeling. She ran past the girl through the hallways of their high school to a bathroom. Lucky for her, this was the one single-occupant bathroom, a holdover from when the school was much smaller. Julia quickly locked the door and stood in front of the mirror over the sink.

“What the heck is going on?” She whispered. “Why do I feel so strange?” Julia noticed a tightness in her bra. “I haven’t grown since freshman year,” she said, “Why does my bra feel tight?” Her hands brushed the front of her shirt and she immediately noticed that her breasts were bulging over her small A cups. I’ve got to get this bra off, she thought, before it starts to hurt.

Julia quickly got her hands on the clasp of her bra and undid it, releasing the tightness on her chest. What she saw now amazed her. Even hidden under her shirt, it was obvious her breasts were much larger than before. She pulled her shirt up, over her tits, and watched as they visibly grew, swelling bigger than a handful.

“How are my boobs growing? What the hell is wrong with me?” They continued developing, larger and larger, passing sizes that Julia considered respectable. Her breasts finally stopped past the size of softballs, bigger than grapefruits, even. Her nipples now looked like thick pennies.

Unknown to her, they were now the same size as Alice’s breasts.

Julia let go of her shirt and adjusted it over her enlarged boobs. How am I going to hide that my boobs just blew up? She resolved to fold her arms over her breasts until she could get to her locker, hoping that her jacket was still in there.

Alice observed Julia walking shyly out of the bathroom, arms folded over her chest. It worked! Who’s got big cow tits now, Julia?

Friday

Julia hadn’t had any more incidents like Monday, and she had gone out shopping to get clothes that fit her properly. She still wore her jacket everywhere so that people wouldn’t think her boobs just suddenly grew five or six sizes bigger. Now that she had everything settled, she was looking forward to enjoying a night out with her friends.

Like any high school seniors, the place to hang out on a Friday night after school was the mall. Julia and her friends browsed all of their favorite stores until they got to their favorite lingerie store. Walking around inside, Ashley, her best friend, pulled her aside and slyly pointed at someone.

“Julia,” she whispered, “Look at that woman’s boobs. They’re huge!”

Julia followed where she was pointing and was amazed by the frontage this woman—probably in her late twenties or early thirties—sported. They hung down below her hips, bulging out two feet in front of her. Oh my god, I wish I had those tits, they’re so big and beautiful! “Damn,” she replied, “Those are some serious ta-tas.”

“I want to get a better look at them- come with me, Julia,” Ashley asked. Julia nodded; of course she wanted to see those boobs.

Ashley and Julia walked past the woman and looked at her chest as discretely as possible.

That same feeling from Monday swept over Julia, sending her into panic mode. “Ashley- I’m running to the bathroom. I’ll be right back.” With that, she ran out of the store to the nearest ladies’ room. The mall was in an affluent area so the bathrooms were individual, which would be good, once she got one. There was one woman waiting in line ahead of her. My bra is getting tight… am I growing again? I hope I can get a bathroom soon…

Waiting in line, her bra kept getting tighter and tighter. She folded her arms over her chest, hoping people wouldn’t notice her tits overflowing her bra. So far, her jacket disguised anything. Soon, her bra was causing her a lot of pain- so much so that she didn’t notice one of the bathrooms was open and she was the only person waiting. She quickly darted into the room.

Locking the door again, Julia unzipped her jacket, rushing to get her shirt and bra off. “It’s so tight- again! I need to get this bra off!” Pulling her shirt up, Julia was stunned. Her tits vastly overflowed her 32F bra, pushing above, below, and to the sides of the cups. She reached behind herself to unhook it, but before she could get her fingers on the clasp, it snapped the bra shot off her, her volleyball sized tits jiggling into the open space.

They’re getting so huge, oh my god, this is amazing! How big will they get? Her breasts kept growing to Julia’s delight, her nipples swelling as well, keeping pace with her boobs. The wobbling masses quickly grew, overwhelming her chest, reaching her hips in a matter of minutes. This feels so good, Julia thought, now rubbing her burgeoning tits with her hands. “I think I might… oh, oooh, ohhhh,” she whimpered, her boobs continuing to grow through her climax. Her knees felt weak as they grew to gargantuan sizes. She gave a yelp when her sensitive nipples came into contact with the cold sink, climaxing again as the nubs hardened into shot glass sized protrusions.

They’re… so… big… Julia could barely think because the sensations from her tits were so amazing. Finally, the growth tapered off.  Julia observed herself the best she could. Her boobs reached down past her hips, halfway down her thighs, her nipples protruding into the cold air two feet away from her torso. They were so huge; her breasts looked like beach balls, obscuring anyone in front of her from seeing her body. She looked like a pair of breasts with legs and a head. Turning, Julia could see her tits a good foot beyond her hips on either side.

My tits are beautiful… and the same size as that woman from the store! Why did I get boobs like her?

She pushed the questions of “why” to the back of her mind. “This is amazing,” she whispered, “but now I have nothing to fit these great big tits… what do I do?” She panicked before thinking of her friends. She texted Ashley that she needed the biggest shirt she could find.