Guest Stars Margaret Colin as Eleanor Waldorf Michelle Trachtenberg as Georgina Sparks Katie Cassidy as Juliet Sharp Clémence Poésy as Eva Coupeau Hugo Becker as Louis Grimaldi Lou Doillon as Herself Co Starring John Bolton as Bruce Caplan Taylor Black as Tiffani Karlie Kloss as Herself Briana Marin as Girl #1 Alexandre Silberstein as Jean Michel Willy Wong as Himself Danielle Billinkoff as Herself Meredith Melling Burke as Herself
