Amateur night?

Hi everyone!  I'm thinking about doing an amateur night at a local club tomorrow evening. BUT, it's summer time and I've been outside a lot at the beach and pool, which has led to some pretty nasty tan lines.  (My legs, arms and stomach look amazing.  Then I have a white bum!)   Looking for suggestions?  Do I suck it up and try to ignore it and hope the lights cover it?  Do I try to get a spray tan tonight?  Get self tanner and put it just on the areas that are white? Sorry if this seems like a silly question!  I have no experience in dancing at a club!