By Amanda Michelle Steiner
August 27, 2015 at 12:00 PM EDT
Jenny Anderson/WireImage

Hayes Grier, brother of Nash and star of Vine, has officially joined the Dancing With the Stars roster.

At just 15 years old, Hayes is the second-youngest star to join the competition. (Hunger Games star Willow Shields was just 14 when she joined the cast for season 20.) 

Hayes’ fan base is mainly comprised of the social media-happy teens who grew his follower counts on Vine, Twitter, and Instagram to 4 million, 2.93 million, and 4.1 million, respectively. However, he’ll have a fierce competitor when it comes to the popular vote in Nick Carter, who announced his candidacy for the Mirror Ball Trophy on Wednesday.

Bindi Irwin and Victor Espinoza have also been confirmed to join the cast for season 21.

DWTS premieres Sept. 14 at 8 p.m ET on ABC. 


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