By Brandy McDonnellOklahoma native Blake Shelton is the latest music star to join the cast of the animated "UglyDolls" movie. The voice cast already also includes music stars Pitbull, Kelly Clarkson and Nick Jonas, along with comedy standouts Wanda Sykes and Gabriel Iglesias.STXfilms' "UglyDolls" feature is based on the plush toy line by David Horvath and Sun-Min Kim, according to The Hollywood Reporter.Read more on NewsOK.com