Though I may be the only one here able to wear this since I am not a DDDD or whatever y'all well-endowed ladies are, there is a new strapless bra -- the "Nu Bra" -- described in the paper:
Totally Strapless
To underscore skimpy, strapless tops when a normal bra won't do, Fashion Forms offers NuBra, a dazzlingly simple contraption made of two soft silicone cups that are lined with a high-tech adhesive and fasten in the front. The NuBra ($60), which goes on and off with surprising ease, clearly responds to a need: Saks Fifth Avenue, sold 500 in two months and is expecting a second shipment today. The bras come in A, B or C sizes, in black, nude or clear, and they are designed to stay sticky for more than 100 wearings — just enough to carry tube-tops and strapless dresses through Labor Day.
http://www.nytimes.com/2003/06/15/fa...WIWN.html?8nyh
I had the earlier version that felt like styrofoam and was hard to stick, so I usually opt for braless when wear a dress cut low on the sides or back. It would be cool if this works well.