Donny Osmond and professional dancer Kym Johnson perform on Dancing with the Stars. Donny Osmond and professional dancer Kym Johnson perform on Dancing with the Stars. (Adam Larkey/ABC/Associated Press) Former child star Donny Osmond triumphed on the dance floor Tuesday night as he was named the newest champion of the reality TV competition Dancing with the Stars.

Osmond, 51, was declared the victor over two younger rival finalists — singer Mya, who is 30, and Kelly Osbourne, 25-year-old daughter of Ozzy Osbourne — through a combination of viewer votes and scores from the program's three judges.

"I did it!" the 1970s teen idol exclaimed when he was declared winner, before rushing out into the studio audience to bring his wife, Debbie, to the stage.

Partnered with Kym Johnson, Osmond called his time on the program — which matches celebrities with professional ballroom dancers for a weekly competition — one of the highlights of his lengthy career.

Regularly ranked among the most-watched U.S. television shows this fall, Dancing with the Stars also counted former congressman Tom DeLay, former NFL star Michael Irvin, pop singer Aaron Carter and actresses Melissa Joan Hart and Debi Mazar among this season's competitors.

Musical guests who delivered performances included Taylor Swift, Michael Bublé, Susan Boyle, the Bee Gees and Whitney Houston.

With files from The Associated Press