"Glee" star Heather Morris used to dance backup for Beyonce -- and now she's covering her on national TV!
Morris, who was one of B's tour dancers around the time "Single Ladies" came out, can be seen covering "Run the World (Girls)" on Tuesday's episode of the FOX show -- but we've got the video for you right now.
Check out the crazy-good choreography from one of the show's most anticipated episodes, "Asian F."
