HA HA HA HA!!! Oh ha, ha, ha!! Reesetee, I'm calling these breast petals from now on. That's the only solution--it's feminine, it smacks of pink, and there's obviously no ulterior motive in using such a term, unlike using the term winkee or dickie.
Interestingly, we had things like this (false shirt-fronts) when I was a little kid. My mom called them dickies. (Why are these things both called by cute little euphemisms for "penis"?) They seemed to always be attached to the garment that needed it--and they still are--but I think this is a good idea. As long as it doesn't slide around.