Vine Star Hayes Grier to Join 'Dancing With the Stars' Season 21

The Vine star is the fourth celebrity to be announced for this season.

Hayes Grier, 15, was announced today as the latest celebrity to join the reality TV competition’s roster for the show’s 21st season.

The show tweeted the news this morning, directing fans to follow the social media-savvy teen on Vine and Twitter.

Welcome to #dwts, @HayesGrier! Follow him on Twitter and Vine for more updates. #HayesDWTS pic.twitter.com/jK4ZRdJbJa

— Official DWTS (@DancingABC) August 27, 2015,

Hey guys I made my big announcement a little early go watch the video on !http://t.co/O97EmzT2pdHope you will support me through this!

— Hayes Grier (@HayesGrier) August 27, 2015

Hayes later tweeted, “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”

More of the new celebrity cast will be revealed on “GMA” Wednesday, Sept. 2. The new season of “Dancing” premieres at 8 p.m. ET Monday, Sept. 14, on ABC.

Welcome to #dwts, @HayesGrier! Follow him on Twitter and Vine for more updates. #HayesDWTS pic.twitter.com/jK4ZRdJbJa

Hey guys I made my big announcement a little early go watch the video on !http://t.co/O97EmzT2pdHope you will support me through this!

Hayes later tweeted, “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”

More of the new celebrity cast will be revealed on “GMA” Wednesday, Sept. 2. The new season of “Dancing” premieres at 8 p.m. ET Monday, Sept. 14, on ABC.

Hayes later tweeted, “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”

More of the new celebrity cast will be revealed on “GMA” Wednesday, Sept. 2. The new season of “Dancing” premieres at 8 p.m. ET Monday, Sept. 14, on ABC.