I was fitted at VS as a 38DD. I always knew that wasn't the proper size but went with it. Needless to say I had a hard time with sports bras. I finally had a proper fitting and was told I'm a 36G. Bras fit so much better now and the support is super. So I ordered this one in 36G and it fits like a glove. It's nice and snug, but I'm still able to breath. It holds the girls when I jump and you can adjust it for activity level. I've only used it for elliptical, strength training and brisk walking but it was super for this. As I said, you can jump and they don't move. Also, I don't look like I have a uni-boob. Only negative, nipples show under a shirt. I'll live.