First off, listen to Lane. Ace bandages can mess you up. They get tighter every time you breathe, because they're designed to constrict movement. Anyway...A couple of store-bought methods I've used: 1) two sports bras a bit too small, one worn regularly and the other folded in half so the elastic compresses the largest part of your chest. Makes a weird ridge though, so if you want to wear semi-tight shirts you need one more over that, worn regularly. 2) Neoprene (stuff wet suits are made from) back brace. It's a long rectangle of Neoprene with velcro on the ends, and you should really wear an undershirt under it because it gets sweaty and gross. Both of those methods worked well for me and I'm about a 34 B/C.