Black tie, white noise

I'm working at the pub tonight, and they're having a charity "Casino Nite". So as bar staff I have to enter into the spirit and dress up, despite feeling fairly curmudgeonly about a) having to work on a Saturday, b) missing two parties as a result, and c) having to "get into the spirit" of something that I think is rather naff. Still, it's for charidee.

Anyway, "dress up" == black tie, basically, and I can't decide whether I should go in a dress or a tux:

( pictures here )

So, vote please, and resolve my clothes crisis.

[Poll #255541]