Guest Stars Margaret Colin as Eleanor Waldorf Amanda Setton as Penelope Shafai Yin Chang as Nelly Yuki Michelle Hurd as Laurel Mädchen Amick as Duchess Catherine Beaton Patrick Heusinger as Lord Marcus Beaton Co Starring Alexandra Carl as Laurel's Assistant Michaela Annette as Mini Serena Purva Bedi as Clare Ellie Pettit as Mini Blair Lydia Grace Jordan as Mini Mean Girl Gonzalo Escudero as VDW/Bass Butler Annalaina Marks as Chuck's Fling-Girl Amy Evinger as Atelier Model Uncredited Kristen Bell voices Gossip Girl