Meanwhile, Lily returns home to Rufus and her family to find that things are definitely not as she left them. Plus, a famous movie actress, Olivia Burke (recurring guest star HILARY DUFF - A Cinderella Story, Material Girls, Lizzie McGuire), enrolls at NYU in hopes of having a somewhat normal college experience, and is assigned to be Vanessa's roommate. Guest star TYRA BANKS (The Tyra Show, America's Next Top Model) appears as Ursula, an actress co-starring in Olivia's movie and someone who Serena befriends.