Photos: 'Dancing With the Stars' celebrity dancers Wildlife conservationist Bindi Irwin is only 17, but the daughter of the late Steve Irwin has made a name for herself as a protector of wildlife on television. The charming teen is one of the youngest dancers on the 21st-season cast of ABC's "Dancing With the Stars." Click through the gallery to see the rest of the celebrity dancers. Hide Caption 1 of 12

Photos: 'Dancing With the Stars' celebrity dancers We know Backstreet Boys singer Nick Carter had some moves back in the late 1990s and early 2000s. From what we've seen of his dance moves, it looks like Backstreet's back. All right? Hide Caption 2 of 12

Photos: 'Dancing With the Stars' celebrity dancers People are saying good things about reality television star/producer/singer Tamar Braxton's moves. Before the competition started, she told "Good Morning America" that she hadn't told her famous sisters about her new gig until the big reveal on September 2. Now she's tearing up the dance floor. Hide Caption 3 of 12

Photos: 'Dancing With the Stars' celebrity dancers Alek Skarlatos, one of five men who halted a potential terrorist attack on a train in France in August, is part of the 21st-season cast. Hide Caption 4 of 12

Photos: 'Dancing With the Stars' celebrity dancers Vine personality Hayes Grier is connecting to teen fans. He's only 15 years old, but he's already a social media star. Hide Caption 5 of 12

Photos: 'Dancing With the Stars' celebrity dancers Honey, we're good with pop singer Andy Grammer as a celebrity dancer. Two singles from his debut album, "Keep Your Head Up" and "Fine by Me," were certified platinum and gold respectively. His 2014 album, "Magazines or Novels," features "Honey, I'm Good," which he performed last season on the show. Hide Caption 6 of 12

Photos: 'Dancing With the Stars' celebrity dancers Alexa and Carlos PenaVega are the first married couple to compete -- against each other! -- on the show. Alexa starred in the "Spy Kids" movies and in the ABC show "Nashville." She also starred on Broadway in the 2007 Tony-winning musical "Hairspray." Carlos, a singer/actor who starred in Nickelodeon's "Big Time Rush," recently released his first solo single in Spanish, "Electrico." Hide Caption 7 of 12

Photos: 'Dancing With the Stars' celebrity dancers Celebrity chef Paula Deen has made headlines for the wrong reasons over the past few years. She joined the show to make friends and lose weight but was voted off in week five. Hide Caption 8 of 12

Photos: 'Dancing With the Stars' celebrity dancers Actor Gary Busey was eliminated on week four of the show. Busey earned an Academy Award nomination for best actor for his performance in the title role in "The Buddy Holly Story" (1978), he's also known for his off-the-wall antics. His other film credits include "The Firm," Point Break" and "Lethal Weapon." He won Celebrity Big Brother UK in 2014. He was voted off in week four. Hide Caption 9 of 12

Photos: 'Dancing With the Stars' celebrity dancers "Real Housewives of Atlanta" reality star Kim Zolciak-Biermann suffered a mini-stroke and withdrew from the competition in week three. Because she left the show, no one else was eliminated that week. Hide Caption 10 of 12

Photos: 'Dancing With the Stars' celebrity dancers Jockey Victor Espinoza rode American Pharoah to a Triple Crown victory this year, the first Triple Crown winner since 1978. But the jockey couldn't dance his way to victory with a human partner. He was eliminated in week two of the show. Hide Caption 11 of 12