Demi Lovato joins X Factor USA judges on stage 19549
Demi Lovato joins X Factor USA judges on stage 19550
Demi Lovato joins X Factor USA judges on stage 19551
Demi Lovato joins X Factor USA judges on stage 19552
Demi Lovato joins X Factor USA judges on stage 19553
Demi Lovato joins X Factor USA judges on stage 19554
Demi Lovato joins X Factor USA judges on stage 19555
Demi Lovato joins X Factor USA judges on stage 19556
Demi Lovato joins X Factor USA judges on stage 19557
Demi Lovato joins X Factor USA judges on stage 19558
Demi Lovato joins X Factor USA judges on stage 19559
Demi Lovato joins X Factor USA judges on stage 19560