Can I wear an 80's theme halloween costume in Vegas for Halloween?

I am going to Las Vegas for Halloween 2010 and I know that everyone dresses up the whole weekend there for Halloween and all the clubs have costume contests and such.

I want to wear an 80’s themed outfit (Leggings, layered colored tanks, cutoff sweatshirt, heals, leg warmers, side pony tail and crazy makeup) but I am concerned that the clubs won’t let me in because some have dress codes of “no sweatshirts” etc. (But its Halloween, right?)

I guess my question is: will I be dressed up enough to be let into clubs? I am thinking “yes” because its Halloween and technically I am going to be wearing a costume but I wanted to make sure. And if anyone has gone to Vegas for Halloween before give me some good advice as to where to go and what to expect.

Thank you!