We love a good party, and you know that the Met Costume Ball 2015, helmed by Anna Wintour, does it better than just about anyone else. Here are our Top 4 votes for the best dressed last night:

Lizzy Caplan in Donna Karan Atelier

Riahnna in Guo Pei

Bee Shaefer in Alex. McQueen

Amal Clooney in Maison Margiela