The past four days have been a non-stop party for a lot of fashion people here in New York. And those Halloween parties have been well-documented. The Tribeca Grand’s Overlook Hotel party, the Boom Boom Room’s fete and last night’s V party hosted by Terry Richardson drew the most fashion-heavy crowds and, as we all know, fashion people like to dress up. They also seem to like obscure references–many of their costumes were tough to identify, but still fun to look at. So, from Alexa Chung to Joan Smalls to Marc Jacobs, here are a bunch of fashion people in their Halloween best!