Demi Lovato joins X Factor USA judges on stage 32513
Demi Lovato joins X Factor USA judges on stage 32514
Demi Lovato joins X Factor USA judges on stage 32515
Demi Lovato joins X Factor USA judges on stage 32516
Demi Lovato joins X Factor USA judges on stage 32517
Demi Lovato joins X Factor USA judges on stage 32518
Demi Lovato joins X Factor USA judges on stage 32519
Demi Lovato joins X Factor USA judges on stage 32520
Demi Lovato joins X Factor USA judges on stage 32521
Demi Lovato joins X Factor USA judges on stage 32522
Demi Lovato joins X Factor USA judges on stage 32523
Demi Lovato joins X Factor USA judges on stage 32524