After canoodling on the carpet, taking selfies, and just being gloriously glam at the Metropolitan Museum of Art, A-listers took their $2000 manicures out for the after-parties. And boy did things get weird. The Weeknd and Naomi Campbell hosted a shindig at Up&Down, while Balmain and Olivier Rousteing kalled for Kardashians at Gilded Lily. And no matter where they partied, every celebrity went wild. Join us in figuring out what's happening here.