Gossip Girl - Season 4, Episode 7: War at the Roses

Serena (Blake Lively) and Nate (Chace Crawford) decided that it is time for Chuck (Ed Westwick) and Blair (Leighton Meester) to settle out their differences by forcing them into a peace treaty. Serena and Colin desperately try to stay away from each other. While Blair's birthday takes a different turn because of Dan's (Penn Badgley) scheming. Rachel Zoe guest stars as herself.

Channel: CW
Air Date: 1 November 2010