Demi Lovato joins X Factor USA judges on stage 12513
Demi Lovato joins X Factor USA judges on stage 12514
Demi Lovato joins X Factor USA judges on stage 12515
Demi Lovato joins X Factor USA judges on stage 12516
Demi Lovato joins X Factor USA judges on stage 12517
Demi Lovato joins X Factor USA judges on stage 12518
Demi Lovato joins X Factor USA judges on stage 12519
Demi Lovato joins X Factor USA judges on stage 12520
Demi Lovato joins X Factor USA judges on stage 12521
Demi Lovato joins X Factor USA judges on stage 12522
Demi Lovato joins X Factor USA judges on stage 12523
Demi Lovato joins X Factor USA judges on stage 12524