Last night the A-list ladies who attended the Marc Jacobs fashion show really dressed to impress. Posh debuted her new 'do while striking fierce poses with Jennifer Lopez, Nicole richie looked pretty good (aside from the curtain-like hem on her skirt), but supermodel Helena Christensen wins the best dressed award by a landslide. Her shortsuit is tailored to perfection, the clutch and strappy sandals are just what the outfits needs, and her hair is flawless. Take notes girls - THIS is how you do fashion week.

Anna Wintour, Sofia Coppola, and Martha Stewart were some of the other gals there, and yes, there were some boys too - the always stylish Kanye West and Jay-Z showed up to check out the models the latest stuff from Marc's Spring 2009 collection.