Reigning DWTS champ Mark Ballas & actress Melissa Joan Hart.

Karina Smirnoff & Aaron Carter.

Kym Johnson & Donny Osmond, singer.

Anna Trebunskaya & ultimate fighting champ, Chuck Liddell.

Anna Demidova & Michael Irvin, former Dallas Cowboy,

Edyta Sliwinska & Ashley Hamilton, actor, comedian, singer-songwriter.

Lacey Schwimmer Mark Dacascos, Iron Chef personality.

Kathy Ireland, former supermodel-turned-businesswoman, and Tony Dovolani

Two-time Dancing champ Cheryl Burke & Tom DeLay, former congressman.

Louis Van Amstel & Kelly Osbourne.

Maksim Chmerkovskiy & actress Debbie Mazar.

Season 1 champ Alec Mazo & Natalie Coughlin, U.S. Olympic swimmer.

Season 7 champ Derek Hough & model Joanna Krupa.

Dmitri Chaplin & Maya

Chesie Hightower & Louie Vito, snowboarder.