Cassie Sumner makes her living from glamour modelling and dating high-profile men - both professions that are all about body image, so it's not surprising Cassie has some issues with hers. She's been bulimic for years and realizes that she's damaging her health for a lifestyle that just doesn't make her happy anymore. However, Cassie feels like a bit of a fraud when she enters Rehab - she feels her issues just aren't the same as the others with their drug and alcohol problems. Cassie quickly bonds with room-mate Alicia - and joins in with some of her teen rebellion. She's a reluctant participants in therapy to begin with and infuriates Rowetta with her reluctance to talk openly about her problems.