Guest Stars Aaron Tveit as Trip van der Bilt Hilary Duff as Olivia Burke Holley Fain as Maureen van der Bilt Kevin Zegers as Damian Daalgard Co Starring Benita Robledo as Amalia Megan Guinan as Willa Weinstein Sonya Harum as Sophie Ben Rauch as Tim Erich Bergen as Paul Hoffman Kate Goehring as Housekeeper Uncredited Kristen Bell voices Gossip Girl Lady Gaga as Herself