Demi Lovato joins X Factor USA judges on stage 09525
Demi Lovato joins X Factor USA judges on stage 09526
Demi Lovato joins X Factor USA judges on stage 09527
Demi Lovato joins X Factor USA judges on stage 09528
Demi Lovato joins X Factor USA judges on stage 09529
Demi Lovato joins X Factor USA judges on stage 09530
Demi Lovato joins X Factor USA judges on stage 09531
Demi Lovato joins X Factor USA judges on stage 09532
Demi Lovato joins X Factor USA judges on stage 09533
Demi Lovato joins X Factor USA judges on stage 09534
Demi Lovato joins X Factor USA judges on stage 09535
Demi Lovato joins X Factor USA judges on stage 09536