09/12/2012 02:35 pm ET Updated Oct 02, 2012

New York Fashion Week Party Photos: Jason Wu, Karlie Kloss, Chloe Sevigny And More Get Wild (PHOTOS)

"I look for personality, confidence and, you know, we hang out," Jason Wu said at his after-party on Saturday night when asked how he chooses models for his runway show (think "House of Style" host Karlie Kloss and Leonardo DiCaprio's girlfriend Erin Heatherton).

And when Wu says "hang out," he means fete his spring 2013 collection at a Belvedere-hosted bash at the Standard Hotel's Boom Boom Room. Aren't the crazy parties what New York Fashion Week is all about? (Oh yeah, there's clothes too.)

From Carine Roitfeld's magazine launch at the Frick, to Rodarte's after-party at Acme, take a look at the photos below to see some of the models, celebrities and fashion stars who have already gotten their party on, including Kelly Osbourne, Chloe Sevigny, Aziz Ansari and more.

New York Fashion Week Parties

Want more? Be sure to check out Stylelist on Twitter, Facebook, Tumblr and Pinterest.