Whitney Leavitt chats with ET's Cassie DiLaura ahead of her Broadway debut as Roxie Hart in 'Chicago;' performances start Feb. 2 at New York's Ambassador Theater. Whitney describes the pressure of taking on a role previously played by Pamela Anderson, Brooke Shields and Ariana Maddix, and opens up about the 'closure' she felt after getting to perform her 'Dancing With The Stars' freestyle on 'Call Her Daddy' alongside pro partner Mark Ballas. Plus, she reacts to rumors of a 'Secret Lives of Mormon Wives' spinoff (she's currently filming season 4!), and gushes about her first lead movie role in the upcoming holiday romcom, 'All for Love.'