So dress code for men is black tie OR lounge suit. September so possibly still warmish. I don't do black, pastel, shiny, frilly or knee-showing. I am a 16, 14 in some shops, hourglass, 5ft 9. I know from previous experience that academics can turn up in all sorts, but obviously there will be lots of civilians at this and I'm not quite sure of where I should be pitching the 'dressed up' level.