Demi Lovato joins X Factor USA judges on stage 24525
Demi Lovato joins X Factor USA judges on stage 24526
Demi Lovato joins X Factor USA judges on stage 24527
Demi Lovato joins X Factor USA judges on stage 24528
Demi Lovato joins X Factor USA judges on stage 24529
Demi Lovato joins X Factor USA judges on stage 24530
Demi Lovato joins X Factor USA judges on stage 24531
Demi Lovato joins X Factor USA judges on stage 24532
Demi Lovato joins X Factor USA judges on stage 24533
Demi Lovato joins X Factor USA judges on stage 24534
Demi Lovato joins X Factor USA judges on stage 24535
Demi Lovato joins X Factor USA judges on stage 24536