Demi Lovato joins X Factor USA judges on stage 16513
Demi Lovato joins X Factor USA judges on stage 16514
Demi Lovato joins X Factor USA judges on stage 16515
Demi Lovato joins X Factor USA judges on stage 16516
Demi Lovato joins X Factor USA judges on stage 16517
Demi Lovato joins X Factor USA judges on stage 16518
Demi Lovato joins X Factor USA judges on stage 16519
Demi Lovato joins X Factor USA judges on stage 16520
Demi Lovato joins X Factor USA judges on stage 16521
Demi Lovato joins X Factor USA judges on stage 16522
Demi Lovato joins X Factor USA judges on stage 16523
Demi Lovato joins X Factor USA judges on stage 16524