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Daughter to former Republican vice-presidential candidate Sarah Palin, Bristol's been in the limelight thanks to ex-fiance and father of her child, Levi Johnston.
2 of 12 Jason Merritt/Getty Images
Mike "The Situation" Sorrentino
Jersey Shore's resident ab-man, The Situation is one of the only castmembers who hasn't ended up in trouble with the law. He's also appears to be the wealthiest.
3 of 12 Steve Granitz/WireImage.com
Will her Dirty Dancing past offer a leg up on the competition? Perhaps. It's still tough to recognize post-nose job Grey as the same Baby, wrongly put in a corner so many years ago.
4 of 12 Gary Gershoff/WireImage.com
The Korean-American comedian hit it big on the stand-up circuit, leading to her own ABC sitcom, All American Girl, in 1994. She now co-stars on Drop Dead Diva.
5 of 12 Todd Williamson/WireImage.com
From Baywatch to America's Got Talent to those infamous cheeseburgers on the floor, the Hoff is everywhere.
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Can the R&B singer, still best known for the hit duet "The Boy is Mine," handle the heat? Now a reality show contestant, Brandy was previously a judge on America's Got Talent.
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But can he dance? Nicollette Sheridan's former fiancé and power balladeer will have to woo the crowds in silence.
8 of 12 Lester Cohen/WireImage.com
This season's resident jock, Warner is a former NFL quarterback now retired. Our guess? He'll fumble around and the crowd will eat it up.
9 of 12 Jerod Harris/WireImage.com
Who needs the Lakers? Fox has been jumping from one guest-starring gig to another (and on shows ranging from One Tree Hill to Ugly Betty to Party Down). Why not throw a reality show on the resume?
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Otherwise known as Justin Bobby's chew toy, Patridge will be doing her best to keep up. We never actually saw her dance at Le Deux on The Hills, did we?
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Let's just hope the former Mrs. Brady, who is now 76, is better than Cloris Leachman.
12 of 12 Chelsea Lauren/WireImage.com
The young That's So Raven actor will have a tough time out-lasting his better-known competitors. The tween vote doesn't really apply to Dancing in the same way it does to American Idol.