Demi Lovato joins X Factor USA judges on stage 27525
Demi Lovato joins X Factor USA judges on stage 27526
Demi Lovato joins X Factor USA judges on stage 27527
Demi Lovato joins X Factor USA judges on stage 27528
Demi Lovato joins X Factor USA judges on stage 27529
Demi Lovato joins X Factor USA judges on stage 27530
Demi Lovato joins X Factor USA judges on stage 27531
Demi Lovato joins X Factor USA judges on stage 27532
Demi Lovato joins X Factor USA judges on stage 27533
Demi Lovato joins X Factor USA judges on stage 27534
Demi Lovato joins X Factor USA judges on stage 27535
Demi Lovato joins X Factor USA judges on stage 27536