Bristol Palin and her 'Dancing With the Stars' partner Mark Ballas
Bristol Palin is ready to tango! She and her 'Dancing With the Stars' partner Mark Ballas hit the dance studio for the first time. "It's positive and it's a good competition. I wanted to step outside my comfort zone and have a good time," she told Us Weekly.

ABC sources told PopEater's Naughty But Nice Rob last week, "Bristol is excited and scared" for her debut. Her proud mama Sarah Palin plans to be sitting in the front row cheering her daughter on, the source adds. See more photos of the cast in rehearsals >>