Shopping, shows and fashion galore—the first day of New York Fashion Week brought out the industry's inner party animal with stores open late, and champagne and stars aplenty. Plus new looks on the runway from Monique Lhuillier and BCBG Max Azria!
• Debra Messing and Michael Kors celebrate Fashion's Night Out at Macy's
• Michelle Trachtenberg and Katy Perry meet up at the Guiseppe Zanotti boutique
• Ashley and Mary-Kate Olsen mix drinks at Bergdorf Goodman
• See all the stars including Blake Lively, Charlize, Theron, Sarah Jessica Parker and more