Fashion Week is in full swing - as is celebrity attendance. As front-row fixtures and party guests, these styled celebs only further the glamour of New York Fashion Week. Highlights include Rachel Zoe stepping out for Marc Jacobs - a show that drew a bevvy of celebs to the sidelines - while Rachel Roy and Olivia Palermo celebrated Roy's Fall collection in their chicest attire. You never know who you'll see cropping up at Fashion Week - click through to see who else we've spotted thus far then check back to see who we added daily.