Britney SpearsDemi LovatoEntertainmentMusic NewsNewsPopTelevision Britney Spears, Demi Lovato To Put The X In X Factor As New Judges MusiqQueenMay 17, 2012 Pop star and dancer Britney Spears and singer/actress Demi Lovato will be joining Simon Cowell and L.A. Reid for the American versio... 0