'Dancing With the Stars' Season 21: Alexa and Carlos PenaVega Join the Celebrity Cast

Season 21 will also feature the likes Bindi Irwin and Nick Carter.

Alexa PenaVega and her husband Carlos PenaVega have signed on for the 21st season of the dancing competition, he announced on Instagram.

"Beyond excited that @vegaalexa and I are going to be competing this season on #season21 @dancingabc," he wrote. "Spending 24 hours at @disneyland #disneyland60 to celebrate!!!"

The Big Time Rush musician may have an edge -- he'll likely be getting advice from his former bandmate James Maslow, who placed fourth in season 18 of the ABC show.

"Dancing with the Stars" returns to ABC on Sept. 14.

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