By InStyle Staff
Updated Sep 22, 2011 @ 12:35 pm

We're not the only ones excited about Alexa Chung's latest collection for Madewell! Kate Bosworth, Elle Fanning, and more stars flocked to InStyle's fashion bash at the Chateau Marmont to get a first look at the It-Brit's new fall line last night. "I'm wearing me!" joked the multi-tasking host, who provided her guests with an airbrush manicure station, a killer party soundtrack and plenty of styling advice. "It's quite a vain adventure to dress yourself from head-to-toe in your own creations, but it's also really nice." Click through the gallery to see more!

Bronwyn Barnes, reporting by Kwala Mandel