Leighton Meester and Sebastian Stan get affectionate on the streets of NYC after attending the Gossip Girl Christmas party at Haven...Pictured: Leighton Meester and Sebastian Stan..<b>Ref: SPL66106 071208 EXCLUSIVE</b>.Picture by: Jackson Lee / Andrew Rocke / Splash News ..<b>Splash News and Pictures</b>.Los Angeles: 310-821-2666.New York: 212-619-2666.London: 870-934-2666.photodesk@splashnews.com.