A third boob!

Jess felt the now familiar burning feeling in her chest.

Her G cup breasts perked up, and were slowly filling up. A moan escaped her lips, the sensations in her breasts increasing. Her breathing intensified as Jess watched her boobs grow about the same size as Claires, before they stopped.

“That’s it?” Jess asked after a moderate break.

“Don’t jinx it!” Claire reminded, and she was right. The two beautiful jiggly mounds were now separating slightly, creating a void between them.

Then, the flat area started to bulge out. Jessica’s tail had found its way into its usual wet cunt, fucking it with loud sloshing. She couldn’t help but yelp and moan, eyes still fixated on the growing mound.

Both sisters could guess where this was going. As the intensity of the self-fucking increased, the third breast stopped its growth at the same size as the others, before a nipple was growing on it.

It, too, was the same as the other too.

Jess, thinking it was over, then started grabbing her nipples, pinching them, only to find out that the had grown as sensitive as her clit. Another loud moan rang through the apartment, and by now, Claire’s masts stood at full attention, watching her sister.

She didn’t bother abstaining, knowing it to be useless, and started rubbing herself.