Demi Lovato joins X Factor USA judges on stage 34513
Demi Lovato joins X Factor USA judges on stage 34514
Demi Lovato joins X Factor USA judges on stage 34515
Demi Lovato joins X Factor USA judges on stage 34516
Demi Lovato joins X Factor USA judges on stage 34517
Demi Lovato joins X Factor USA judges on stage 34518
Demi Lovato joins X Factor USA judges on stage 34519
Demi Lovato joins X Factor USA judges on stage 34520
Demi Lovato joins X Factor USA judges on stage 34521
Demi Lovato joins X Factor USA judges on stage 34522
Demi Lovato joins X Factor USA judges on stage 34523
Demi Lovato joins X Factor USA judges on stage 34524