A star flips to become the new `Dancing' champ

Shawn Johnson is adding a mirrorball trophy to her collection of Olympic medals. After all, the two glittering prizes seem to go very well together. The 17-year-old gymnast was named "Dancing With the Stars" champion Tuesday during the season finale of the hit ABC show, the third Olympian in eight seasons to win.

Johnson and her professional partner, Mark Ballas, held the mirrorball trophy aloft as the rest of the contestants rushed out to greet them, hoisting the couple on their shoulders as sparkling confetti flew.

"This has been the best experience ever," Johnson said after her victory. "I've grown so much."

Johnson …