Star Sightings at New York Fashion Week

The hottest celebs are flocking to NYC for the Mercedes-Benz Fashion Week, to check out all the upcoming fashion trends for spring 2011!

Kim and Kourtney Kardashian sat front and center for Jill Stuart's Lincoln Center show -- and the always fashionable Victoria Beckham debuted her new line of slick and sexy cocktail dresses.

Check out all the fashionistas who are in the Big Apple for Fashion Week!

kim kardashian and kourtney

Meanwhile in L.A., Justin Timberlake promoted the new spring William Rast line for Fashion's Night Out. Check out the photos on Timberlake's site!