As you’ve probably noticed by our extensive coverage this week, fashion week is about much more than clothes going down a runway. There are the parties, the backstage interviews, the dance between street style stars and photographers, car accidents, reality tv shows filming, possible feuds; and, of course, there’s nothing like fashion week to bring all the stars out of hiding.

A well-placed celebrity can result in exponentially more press for a designer than he or she might have gotten otherwise and always creates a flurry of front row excitement–especially when it’s one you wouldn’t expect.

Some really unlikely people showed up this week. From Matt Damon to Joe Jonas to Li’l Kim, click through for 15 celebrity appearances from this week that we did not see coming.