Guest Stars Connor Paolo as Eric van der Woodsen Sebastian Stan as Carter Baizen Chris Riggi as Scott Rosson James Naughton as William van der Bilt JoAnna Garcia Swisher as Bree Buckley Ashley Hinshaw as Herself Co Starring Aaron Schwartz as Vanya Matthew Risch as Ilan (Chief Paparazzi) Will Blagrove as Polo Event Valet Mike Houston as Polo Event Security Guard Jason Pendergraft as Publicity Agent Tom Zemon as Process Server Nacho Figueras as Himself Alexandra Richards as Herself Uncredited Kristen Bell voices Gossip Girl