Guest Stars Connor Paolo as Eric van der Woodsen Zuzanna Szadkowski as Dorota Kishlovsky Nicole Fiscella as Isabel Coates Amanda Setton as Penelope Shafai Dreama Walker as Hazel Williams Yin Chang as Nelly Yuki Matt Doyle as Jonathan Whitney Tamara Feldman as Poppy Lifton Armie Hammer as Gabriel Edwards Patrick McMullan as Himself Co Starring Aaron Schwartz as Vanya Anne Torsiglieri as Renee Rosson Stevie Ray Dallimore as Chris Rosson Uncredited Kristen Bell voices Gossip Girl