'DWTS': Bristol's Rumba from the Tundra

"Dancing with the Stars" contestant Bristol Palin showed some serious skin -- and some sexy moves -- in her rumba with partner Mark Ballas, while mom and dad Sarah and Todd Palin sat in the audience!

"It's definitely gutsy to come out here in something like this," the Alaskan teen mom told "Extra's" Lauren Sanchez. "My dad shook Mark's hand. My mom gave him a hug. They're happy with it."

Watch the performance!

Sanchez asked the 19-year-old what her mom says about the judges' brutal criticism. "She thinks it's all an act, just for ratings."

Jennifer Grey didn't have to worry about harsh words from the judges, receiving the first 10s of the season for her stunning Argentine tango with partner Derek Hough. How do they continue to stay on top each week? "I don't know. We just do one day at a time," she confessed.

As for Florence Henderson learning to bump and grind, she laughed, "That was the easy part!"