My friend tried duct tape out of desperation one New Year's Eve.
She had an amazing red dress that was not bra-friendly at all. She tried everything and saw something about duct tape in a magazine. I had to help her apply it and it worked really well! But, we were dancing all night and it kind of melded to her body. She said her boyfriend had to help her rip it off and she was in tears the whole time! She had bruises and welts for a couple of weeks afterwards.
I doubt I'll ever try it because I have really sensitive skin and that wouldn't be pretty!