Carlos PenaVega Dances His Way Into DWTS History With Alexa PenaVega: Learn Why – Season 21 ‘Dancing With The Stars’ Cast News [Video]

Carlos PenaVega hopes to make history when Season 21 of Dancing With the Stars debuts in September. That’s because the boy band singer and his wife Alexa PenaVega will pirouette into unknown territory as the only wedded duo ever to appear on the show, according to MSN.

As rehearsals begin and muscles start to ache, Carlos hopes to live up to the name of his group, Big Time Rush, and make a big name for himself on the dance floor.

Carlos is already feeling the pain from rehearsing.

“MY. BODY. HURTS. Hahaha thank you @DancingABC,” tweeted PenaVega.

With the names of celebrities set gradually emerging, others include Paula Deen, Nick Carter, Bindi Irwin, Victor Espinoza, Kim Zolciak, and Chaka Khan.

But which celebrities will join PenaVega, Carter, Irwin, Espinoza, Zolciak, Khan, and Deen when Season 21 of Dancing With the Stars debuts September 14?

Look for Hayes Grier, reported ABC News.

At 15, Hayes has already made a name for himself as a Vine star and now he’s set to be a dancing star. The choice of Grier came via the show’s Twitter account.

“Welcome to #dwts, @HayesGrier! Follow him on Twitter and Vine for more updates. #HayesDWTS,” tweeted @DancingABC.

And Hayes made it clear that he’s already getting his dancing moves ready.

“Day 2 gettin some moves down,” tweeted ‏@HayesGrier.

Grier appears to be one of the celebrities already determined to let his fans keep up with his activities on DWTS.

“I’m going to go back to bed right now since I have my first rehearsal in a few hours. Keep the hashtags going and trending! Be back soon,” tweeted Hayes.

Hayes was the fourth star to be officially announced and confirmed for the new Dancing With The Stars season. Prior to Grier, the official announcements (versus rumors that media outlets reported to have confirmed) were Bindi Irwin, American Pharaoh jockey Victor Espinoza and Backstreet Boy member Nick Carter.

Look for the actual big reveal of celebrities on GMA Wednesday, September 2, and then check out their moves when DWTS debuts 8 p.m. ET Monday, September 14 on ABC.

As for hot rumors about who else will compete for the mirror ball trophy, Demi Moore and Jodie Sweetin along with Caitlyn Jenner and Rick Schroeder are among the names, reported E News.

But don’t start anticipating Demi to try to outdo her daughter Rumer Willis, who won Season 20 with her partner Val Chmerkovskiy. For this upcoming season, Moore has declined.

As for Jodie Sweetin, she’s already busy with the Netflix series Fuller House, which is a reboot of Full House.

Caitlyn Jenner also declined, because she’s immersed in I Am Cait, and Rick is working on NBC’s Coat of Colors.

What do you think of the current Dancing With The Stars celebrity contestants? Will Carlos PenaVega and his wife Alexa start a new trend for the show in choosing married couples to compete? Who else would you like to see and what other hot rumors have you heard? Post your comments below.

[Photo by Araya Diaz/Getty Images for Sunset Entertainment Group]