Well, but it's a push up

Bill gasped a little as he saw his reflection. The bra fit, but it was pushing his breasts together and making way more cleavage than he thought possible. They looked way bigger like this. "Shit, must have grabbed a push up bra or something..." he whispered. Moving a little, he was pleased to find that it at least kept him from bouncing around too much.

He'd need to grab a more normal bra, but he'd need to decide if he should wear the one he was wearing now for the relief from the bouncing, or go without for a little longer?