As an actual go-go dancer, I can say that outfits are tending to lean towards being more and more scantily clad. With that being said, my troupe doesn't necessarily go the pastie and bikini bottom route, but we definitely are dressed more risque than the majority of party-goers. Most of this is for the spectacle and stage presence, making it more outlandish and dramatic persay. We're not trying to be exotic dancers, nor are we trying to be candy ravers. Just performers in clubwear who love EDM!

Also, your average party attendee is more likely to dance when they can have the mentality of, "Hey, those girls on stage are in wild, skimpy outfits and having a blast, so I sure as fuck won't be out of place!" And like many others have said, it gets ridiculously hot!