Demi Lovato joins X Factor USA judges on stage 16525
Demi Lovato joins X Factor USA judges on stage 16526
Demi Lovato joins X Factor USA judges on stage 16527
Demi Lovato joins X Factor USA judges on stage 16528
Demi Lovato joins X Factor USA judges on stage 16529
Demi Lovato joins X Factor USA judges on stage 16530
Demi Lovato joins X Factor USA judges on stage 16531
Demi Lovato joins X Factor USA judges on stage 16532
Demi Lovato joins X Factor USA judges on stage 16533
Demi Lovato joins X Factor USA judges on stage 16534
Demi Lovato joins X Factor USA judges on stage 16535
Demi Lovato joins X Factor USA judges on stage 16536