Quick google search...
From
this site (I cut and pasted):
So, you've been invited to a James Bond theme party, or you're holding one yourself? And now you want to know how to dress as 007 himself. Here are a few ideas for the quintessential James Bond costume:
* Read the section on James Bond's appearance again. Anything appeal? You can wear a sharp suit with white shirt and black knitted silk tie. Simple. Sophisticated. What more do you want?
* The Tuxedo option - black or white dinner jacket/tux and a black bow tie. With this option you sould wear a white shirt, black patent leather slip-ons a black cummerbund. If you don't own your own dinner jacket or tuxedo, renting is easy - just don't be seen wearing it during daylight hours.
* Or how about Bond a frogman. A wetsuit will get too hot to wear all night, but you can take a facemask and snorkel and wear it with your tux.
Here's a site that shows costumes that are being auctioned off.