Christina Aguilera’s Warning to the Men of ‘The Voice’

Christina Aguilera may not be returning for the fourth season of NBC’s “The Voice,” but that doesn’t mean she isn’t looking out for her replacement, Shakira. The “Just a Fool” singer has had her fair share of heated arguments with the show’s men in the past and on Monday she took to Twitter to put returning bad boy mentors, Blake Shelton and Adam Levine, in check. But something tells us Shakira will be able to hold her own in the coach’s chair!