Dancing with the Stars: Meet Season 13's CompetitorsDavid Arquette, Kristin Cavallari, Nancy Grace, Chaz Bono and more will step into the ballroom on Sept. 19

KRISTIN CAVALLARI

After the shock of broken engagement to Chicago Bears quarterback Jay Cutler last month, Cavallari, 24, says, "It's good to stay busy. I have no idea if I'll be good or not. I have a lot of anxiety about just getting in there and seeing how well I'll be able to pick up the dances."