Gymnast Shawn Johnson Added to CMT Awards Celebrity List

The star-studded lineup for Tuesday night's CMT Music Awards just got a little bit bigger.  Dancing with the Stars champions Shawn Johnson and Mark Ballas and rapper T-Pain have been added to the list of presenters for the show, which will air at 8 p.m. EST on CMT on June 16. They will join fellow presenters Rodney Atkins, Billy Currington, Julianne Hough, Naomi Judd, Martina McBride, Lee Ann Womack, Katie Cook and Lance Smith.