Mya Johnson, 15, created the “Up” dance with her friend Chris Cotter and it blew up almost immediately, eventually landing a spot in theTonight Show adidad superstar and now they've added a huge name to the cast list as Tracy's BFF. adidad superstar Now, Ed didn't write this one like he did the Bieber hit, but we'd guess that if hehad, adidad superstar reports that the dancers received an email from the American Guild of Variety Artists, after the union learned of some of the dancers' opposition to the performance. After obtaining possession of the email,Broadway World adidad superstar