Olympians, child stars, and more! See which celebrities and their professional dance partners will be competing for the Mirror Ball trophy on Season 18 of the ABC reality competition show, Dancing With the Stars -- and see how they look in their sexy dance costumes
Danica McKellar and Valentin Chmerkovskiy
"I've been a fan of Dancing With The Stars since the very beginning," the Wonder Years alum said on GMA. "I'm just thrilled and I hope to do a good job."