Demi Lovato joins X Factor USA judges on stage 27433
Demi Lovato joins X Factor USA judges on stage 27434
Demi Lovato joins X Factor USA judges on stage 27435
Demi Lovato joins X Factor USA judges on stage 27436
Demi Lovato joins X Factor USA judges on stage 27437
Demi Lovato joins X Factor USA judges on stage 27438
Demi Lovato joins X Factor USA judges on stage 27439
Demi Lovato joins X Factor USA judges on stage 27440
Demi Lovato joins X Factor USA judges on stage 27441
Demi Lovato joins X Factor USA judges on stage 27442
Demi Lovato joins X Factor USA judges on stage 27443
Demi Lovato joins X Factor USA judges on stage 27444