Watch Nick Carter and Bindi Iriwin do the whip and nae nae

The competition is officially on!

"Dancing With the Stars" released promotional videos Monday of their season 21 cast showing off their whip and nae nae dance moves to Silento's "Watch Me." If the videos are any indication, it's pretty easy to see who might be headed leaping, jumping and skipping toward that mirrorball trophy.

Nick Carter definitely has a leg up on the rest of the dancing cast as a former member of the Backstreet Boys. The 35-year-old crooner showed off his smooth moves and a couple of freestyle movements, putting him in our top contenders. That being said, his seriously intense gaze might not win him points. Loosen up, Nick.

Next up, Steve Irwin's adorable daughter, Bindi, showed that what she may lack in dance skills, she makes up for in personality. The 17-year-old TV presenter danced with a snake on her shoulders just like Britney Spears (although, she was likely less frightened of the snake) and smiled for the cameras. We're going to give her a good shot for the win just on how darn cute she is.

Grammy winner Chaka Khan has what we call rhythm and style -- that could win her big points in this competition. Don't you agree?

Kentucky Derby-winning jockey Victor Espinoza is going to get the wild card vote from us. Sure, he doesn't exactly have the whole suave bit down, but he looks light on his feet (probably, because he is) and could trot his way right into the top 10.

Hayes Grier may be a YouTube sensation, but it hard to say if the cute kiddo is going to be a dancing sensation. He seems a little stiff to us.

Check out more of the fun videos on the "DWTS" YouTube channel and don't forget to tune into the show's season premiere on Sept. 14 on ABC.