Flo-Rida got it right...

the club can't handle me. Ya know why? I'm wearing a killer outfit, that's why.

mandatory:
-spanx/shorts under your skirt: no surprises, please

-bag with a strong closure: it would suck to lose everything
-hair tie
-oil blotting papers: get rid of sweat and keep your makeup
-bandaids: in case you get blisters from new shoes

avoid:

-excessive sequins: they can fall off when rubbing against your dance partner

-multiple bangles: they will clang on your wrists all night long

-jeans and skirts with no stretch: how do you plan on getting low in those?