Demi Lovato joins X Factor USA judges on stage 00457
Demi Lovato joins X Factor USA judges on stage 00458
Demi Lovato joins X Factor USA judges on stage 00459
Demi Lovato joins X Factor USA judges on stage 00460
Demi Lovato joins X Factor USA judges on stage 00461
Demi Lovato joins X Factor USA judges on stage 00462
Demi Lovato joins X Factor USA judges on stage 00463
Demi Lovato joins X Factor USA judges on stage 00464
Demi Lovato joins X Factor USA judges on stage 00465
Demi Lovato joins X Factor USA judges on stage 00466
Demi Lovato joins X Factor USA judges on stage 00467
Demi Lovato joins X Factor USA judges on stage 00468