Katie jumped in surprised as she heard Tiffany through the door. "Shit!" she thought as she looked at herself in the dirty mirror. Her softening cock was not so visible underneath the skirt, the fabric sported a large wet spot where her cum had shot through. Her panties were soaked, and her breasts were also jiggling in rythm with her movements and panicked breathing.
Not just her upper breasts, in fact. Cupping them in her hands (barely), she noticed the pair under them had been affected by the BE oil as well - they had grown almost to a B cup! The lower pair seemed mostly unchanged, no more than an A cup. All of them clearly looked like boobs now, though. Although her belly was flat, the multiple nipples made her feel like a pregnant bitch!
Hurriedly, she grabbed her bras, but her breasts would easily overflow them. She threw the useless item in a corner with a frustrated grunt and picked up her shirt, attempting to stuff her six breasts inside while she was buttoning up as fast as she could... and Tiffany barged in.
Katie pulled on her shirt to cover herself and hide her breasts, but she only succeeded in squeezing them together, making them bulge visibly forward. Tiffany's eyes widened.
"What... is... that?" she asked, pointing to Katie's chest with a shocked look.
Katie squeezed her breasts tighter against her body, embarassed - and unvoluntarily making her nipples outlined very visibly through the cloth. Her upperbreasts slipped over her hands, hanging generously outside of the shirt.
"The oil... it worked. The fruit worked too... I grew these..." Katie said with a trembling voice. "Shouldn't have eaten that blue fruit.". Nor the yellow one, a little voice taunted in the back of her head.
Tiffany moved forward and reached out to one of Katie's middle breasts, squeezing it firmly. Katie jumped with an audible "ouch!".
"Ooh you got to be kidding me, they're actually real!" Tiffany shouted as she made a step back.
"Duh, I told you!!!" Katie rubbed her painful breast. At the same time, the forbidden touch of her friend had made her feel funny in her panties. She shook her head, blushing, and resumed the buttoning of her shirt over her multiple mammaries to keep herself from thinking too much.
Tifanny noticed Katie's squirming, and pointed to the stained skirt. "You got BE oil all over yourself, silly." Katie blushed but said nothing. If only she knew...
"Sooo... The BE oil works. I wouldn't mind a little enhancement myself", Tiffany said as she grabbed the bottle and opened it.
"What? You're already a C cup, what's the point?" Katie asked, confused.
"Ok, it's a great size and my boyfriend loves it, but what if I had a D cup? It would look perfect on my frame", Tiffany said as she was already unbuttoning her school shirt. Before her friend could say a thing, she poured a generous amount of oil into her hand and started massageing her chest.
Quickly enough she started getting flustered. "That's... a nice sensation. So warm" she whispered with a hint of lust. Katie watched as Tiffany's breasts started swelling, nipples perking up and her breathing a little erratic. Inside her cum-soaked panties, Katie felt a slight stirring.