I am a 34DD, and when I go this bra I found it to be a little small, I probably would have been better with a 34DDD.  It does hold me in place, which I suppose is the whole point, but it is slighty uncomfortable, it feels like I forgot to remove a tag on the front strap, but there is nothing there, also it makes my boobs look pointy.  It's one I wish I would have tried on first.