It's all about peacocking my friend. You have got to liven up your appearance with something people can comment on; something which sets you apart from all the generic wanna-be assholes out there.
Gear up! Get a cool wrist-band and some nice rings that match (don't go overboard here though, or you'll look like you're trying too hard). Hats are a little lame, and wearing sun glasses in a dark nightclub is stupid. Find some cool accessories an be creative!
Suit up! Wear a casual blazer or a cool tie. Nothing cheesy like a Goofy tie or something (unless you incorporate it into your game).
Wear something other than what those guys are wearing and you'll instantly stand out as being different. Which btw. is what PU is all about, so if you're uncomfortable with being different, then you're going to have to learn to live with it
Good luck!