I am very flat chested and don't really need support but I do need something since most of the fashions today are so thin. I am 38 AA I got a large supposedly 36-38 it is very tight, and the front area of the arm digs in. I don't need coverage around the sides. if you are an average size it is probably OK for you. on the other direction if you need lots of support I don't think this will do it for you either. but then I have been in search for a suitable bra (that I don't have to put an extension on) for years.