I like to lounge in a tank & sweats or tights and this is a nice addition to my wardrobe.  I have a small frame(32/34) and large breasts(H/I cups).  This tank is definitely supportive and I felt like I was being held in.  I ordered a medium and glad I did.  The large would probably fit better up top but would have been too loose in the stomach area.  I can go braless in this if I wanted but due to my size that really isn't comfortable.  I still wear a bra but I can go with one of the ones that doesn't have underwire.