Demi Lovato joins X Factor USA judges on stage 02493
Demi Lovato joins X Factor USA judges on stage 02494
Demi Lovato joins X Factor USA judges on stage 02495
Demi Lovato joins X Factor USA judges on stage 02496
Demi Lovato joins X Factor USA judges on stage 02497
Demi Lovato joins X Factor USA judges on stage 02498
Demi Lovato joins X Factor USA judges on stage 02499
Demi Lovato joins X Factor USA judges on stage 02500