Hey hun unders make the implant smaller, i have just had 430 uhp overs and was a very empty B cup, i have bought 36DD 34E And 36E sports bras and they all look like they will fit, i have the DD on now as the tighter the better but if i was you get a 34D as you swell and bloat so the band might be too tight on a 32? But with unders they go smaller after swelling then bigger once ur muscle relaxes and stretches, so u might want to get a 34DD and 32E too for different stages xxx