Alexander Skarsgard stepped out to NYC's Skylight Studios West last night to celebrate the Mulberry Spring 2012 collection during New York Fashion Week with the company's creative director, Emma Hill, and other famous faces like Alexa Chung, Rose Byrne, and Maggie Gyllenhaal. It was a busy day with plenty of catwalks keeping the stars busy — Elle Fanning supported the Marc by Marc Jacobs show; Ed Westwick joined Bryan Greenberg; Brad Goreski and Sebastian Stan were at Simon Spurr; and Mandy Moore checked out the latest offerings from Jenny Packham. Renée Zellweger showed love to her longtime friend Carolina Herrera, and Brody Jenner was on hand to see Avril Lavigne's offerings for Abbey Dawn. In fact, Avril invited Brody's half sister, Kylie Jenner, to walk her very first runway, and many of the Kardashians — like Kim, Kourtney, and Kris Humphries — were in the front row to watch. There's more stylish fun to come today — stay tuned for all our fashion week coverage!