Demi Lovato joins X Factor USA judges on stage 00501
Demi Lovato joins X Factor USA judges on stage 00502
Demi Lovato joins X Factor USA judges on stage 00503
Demi Lovato joins X Factor USA judges on stage 00504
Demi Lovato joins X Factor USA judges on stage 00505
Demi Lovato joins X Factor USA judges on stage 00506
Demi Lovato joins X Factor USA judges on stage 00507
Demi Lovato joins X Factor USA judges on stage 00508
Demi Lovato joins X Factor USA judges on stage 00509
Demi Lovato joins X Factor USA judges on stage 00510
Demi Lovato joins X Factor USA judges on stage 00511
Demi Lovato joins X Factor USA judges on stage 00512