Parties! The style, stars and scoop from Hollywood's hottest events

Ed Westwick, Taylor Momsen, Chase Crawford, Leighton Meester, Jessica Szhor, Blake Lively and Penn Badgley presented a united front when they attended a bash to celebrate the premiere of Season 2 of the hit show Gossip Girl. Vitaminwater hosted the end of summer soiree at the EMM Group Estate in Hamptons hot spot Sag Harbor, where the cast taped scenes for upcoming episodes.