Demi Lovato joins X Factor USA judges on stage 13525
Demi Lovato joins X Factor USA judges on stage 13526
Demi Lovato joins X Factor USA judges on stage 13527
Demi Lovato joins X Factor USA judges on stage 13528
Demi Lovato joins X Factor USA judges on stage 13529
Demi Lovato joins X Factor USA judges on stage 13530
Demi Lovato joins X Factor USA judges on stage 13531
Demi Lovato joins X Factor USA judges on stage 13532
Demi Lovato joins X Factor USA judges on stage 13533
Demi Lovato joins X Factor USA judges on stage 13534
Demi Lovato joins X Factor USA judges on stage 13535
Demi Lovato joins X Factor USA judges on stage 13536