Demi Lovato joins X Factor USA judges on stage 01549
Demi Lovato joins X Factor USA judges on stage 01550
Demi Lovato joins X Factor USA judges on stage 01551
Demi Lovato joins X Factor USA judges on stage 01552
Demi Lovato joins X Factor USA judges on stage 01553
Demi Lovato joins X Factor USA judges on stage 01554
Demi Lovato joins X Factor USA judges on stage 01555
Demi Lovato joins X Factor USA judges on stage 01556
Demi Lovato joins X Factor USA judges on stage 01557
Demi Lovato joins X Factor USA judges on stage 01558
Demi Lovato joins X Factor USA judges on stage 01559
Demi Lovato joins X Factor USA judges on stage 01560