Ehrm, how big are your boobs? It's quite low cut. I'm the same as you, a ten and a brunnette, but I've boobs and that dress would make me look really inappropriately dressed. I think if you're small in the boob dept it would work, otherwise, it might be a bit revealing up top.
Agree thought sparkly sandals and no tights is best, maybe a bit of fake tan on your legs, I think you need to be assuming it won't be cold in the venue,