Demi Lovato joins X Factor USA judges on stage 17493
Demi Lovato joins X Factor USA judges on stage 17494
Demi Lovato joins X Factor USA judges on stage 17495
Demi Lovato joins X Factor USA judges on stage 17496
Demi Lovato joins X Factor USA judges on stage 17497
Demi Lovato joins X Factor USA judges on stage 17498
Demi Lovato joins X Factor USA judges on stage 17499
Demi Lovato joins X Factor USA judges on stage 17500