Does anyone have experience of the stick on bra things that are for sale? I have a wedding to go to, and my dress is halter-neck with a slightly too low back so normal bras are out. I am faced with forking out for a backless body or wearing the stick on things which are cheaper. The trouble is that I am 32DD and want proper support so am unsure of whether the stick ons will be good enough or if they will start to slip once I start drinking and sweating, (don't I sound lovely?!)