Demi Lovato joins X Factor USA judges on stage 06525
Demi Lovato joins X Factor USA judges on stage 06526
Demi Lovato joins X Factor USA judges on stage 06527
Demi Lovato joins X Factor USA judges on stage 06528
Demi Lovato joins X Factor USA judges on stage 06529
Demi Lovato joins X Factor USA judges on stage 06530
Demi Lovato joins X Factor USA judges on stage 06531
Demi Lovato joins X Factor USA judges on stage 06532
Demi Lovato joins X Factor USA judges on stage 06533
Demi Lovato joins X Factor USA judges on stage 06534
Demi Lovato joins X Factor USA judges on stage 06535
Demi Lovato joins X Factor USA judges on stage 06536