Gossip Girl Drinks Vitamin Water

The entire cast of Gossip Girl helps the CW Network celebrate the premiere party for the 2nd season of Gossip Girl hosted by VitaminWater at the EMM Group Estate on Saturday night.

Castmates hung out in the Don Julio VIP room including on-and-off-screen couple Blake Lively and Penn Badgley, Chace Crawford, Leighton Meester, Taylor Momsen, Ed Westwick and Jessica Szohr. Blake paired a Ralph Lauren top and Delman sandals with her Whitley Kros white jeans.

The second season of Gossip Girl kicks off @ 8PM ET/PT on Monday, September 1. The season premiere of One Tree Hill follows.

WHAT DO YOU THINK of Blake Lively’s ruffled, backless top?

20+ pictures inside of Gossip Girl drinking Vitamin Water…