LOS ANGELES, Aug. 27 (UPI) -- Vine star Hayes Grier will compete on Dancing with the Stars season 21.
The 15-year-old social media star revealed the news on the Challenged app Thursday morning. Grier joins 35-year-old Backstreet Boys singer Nick Carter, 17-year-old conservationist Bindi Irwin and 43-year-old Triple Crown jockey Victor Espinoza.