Guest Stars Zuzanna Szadkowski as Dorota Kishlovsky Nicole Fiscella as Isabel Coates Robert John Burke as Bart Bass Amanda Setton as Penelope Shafai Dreama Walker as Hazel Williams John Patrick Amedori as Aaron Rose Kevin Stapleton as Andrew Tyler Natalie Knepp as Lexi Nastia Liukin as Herself Jake O'Connor as Chuck 2.0 Jennifer Damiano as Justine Uncredited Kristen Bell voices Gossip Girl