Demi Lovato joins X Factor USA judges on stage 08525
Demi Lovato joins X Factor USA judges on stage 08526
Demi Lovato joins X Factor USA judges on stage 08527
Demi Lovato joins X Factor USA judges on stage 08528
Demi Lovato joins X Factor USA judges on stage 08529
Demi Lovato joins X Factor USA judges on stage 08530
Demi Lovato joins X Factor USA judges on stage 08531
Demi Lovato joins X Factor USA judges on stage 08532
Demi Lovato joins X Factor USA judges on stage 08533
Demi Lovato joins X Factor USA judges on stage 08534
Demi Lovato joins X Factor USA judges on stage 08535
Demi Lovato joins X Factor USA judges on stage 08536