Demi Lovato joins X Factor USA judges on stage 32525
Demi Lovato joins X Factor USA judges on stage 32526
Demi Lovato joins X Factor USA judges on stage 32527
Demi Lovato joins X Factor USA judges on stage 32528
Demi Lovato joins X Factor USA judges on stage 32529
Demi Lovato joins X Factor USA judges on stage 32530
Demi Lovato joins X Factor USA judges on stage 32531
Demi Lovato joins X Factor USA judges on stage 32532
Demi Lovato joins X Factor USA judges on stage 32533
Demi Lovato joins X Factor USA judges on stage 32534
Demi Lovato joins X Factor USA judges on stage 32535
Demi Lovato joins X Factor USA judges on stage 32536