I am a D/DD cup and a former Victoria's Secret employee. I can tell you from my experience as well as the 100's of others I sold their strapless/backless bra to - IT WORKS! It works so well that I won't even try anyone else's. I love it and it held me in for a wild night at my last formal. It does help if you have someone help you put it on. My roommate was nice enough to help me put it on as I held the girls in place!