The most-talked-about Upper East Siders headed to Cipriani in NYC over the weekend to celebrate 100 episodes of Gossip Girl. Blake Lively, Leighton Meester, Michelle Trachtenberg and co. were joined by Chloë Moretz and Karlie Kloss to celebrate the milestone. Blake sported a pretty braided up 'do, while Leighton went more rock chick with a smoky eye. See all the beauty looks up close now!