I should have purchased a pair of these a long time ago.  It amazes me how well it stays on...even after several washes!!  It's so easy to apply, and works really well with halters, backless, or any strappy top or dress, at that.  I got a pair of these to wear for my Wedding dress, but I've been finding that I wear these more often than I could ever imagine!  It's really important that you get the right cup size to ensure proper coverage.  I highly recommend these!!!