Business Insider/Aly Weisman
But for those who do choose to wear clothing, it's all about the costumes.
And the ornate outfits have become a huge part of the festival.
Bikinis, body paint, tutus, masks, headdresses, wigs, floral crowns and feathers - it's all there. Often all worn at once.
We attended the festival last year and documented what we saw...