ABC unveiled Monday the full cast for the ninth season of its TV Show Dancing With the Stars on Good Morning America.

Among the sixteen participants who will dispute the prize are rock star daughter, Kelly Osbourne, former House Majority Leader Tom Delay and Mark Dacascos, from Iron Chef America.

This is the biggest cast the program ever has had, the show's host Tom Bergeron said in Good Morning America. Producers will also feature a special new format in which double eliminations will occur in the middle of the season.

Below is the list of the contestants:

Macy Gray - singer Grammy Award Winner

Melissa Joan Hart - television actress, she starred as Sabrina the Teenage Witch.

Kathy Ireland - Supermodel

Mya - Grammy Award Winning artist

Mark Dacascos - actor and host of Food Networks Iron Chef America

Ashley Hamilton - actor songwritter and comedian

Michael Irvin - former Dallas Cowboy player

Donny Osmond - former co host of the ABC series THe Donny & MArie Show and brother of former DWTS contestant Marie

Tom Delay - former Republican House Majority Leader

Natalie coughlin - Olympic swimming gold medalist

Joanna Krupa - actress and model also featured in an ad campaign for PETA's I'd Rather Go Naked Than Wear Fur

Debi Mazar - actress she has worked with Oliver stone, Spike Lee, Woody Allen, among others.

Kelly Osbourne - singer actress daughter rock icon Ozzy Osbourne

Aaron Carter-artist/songwriter, producer, actor and younger brother of Backstreet Boys Nick Carter,

Chuck Liddell - Ultimate Fighting Championship and Mixed Martial Arts icon

Louie Vito- Professional snowboarder