Here’s a sample panel from a breast expansion sequence I posted to deviantART back in November. It’s gone on to become one of the most popular works I’ve posted there.
The basic idea of the sequence is that people are rarely happy with what they’ve got, and sometimes even rue the wishes they’ve made. The subject is a flat chested woman who is unhappy with her figure. Then, magically, her breasts begin to grow! At first she is gleeful, as she goes from flat to busty, but as she continues to grow, eventually developing truly enormous tits, her expression sours. She wasn’t happy with no boobs, and she isn’t happy with huge boobs, either.
[Breast Expansion Cycle - deviantART]