Demi Lovato joins X Factor USA judges on stage 07525
Demi Lovato joins X Factor USA judges on stage 07526
Demi Lovato joins X Factor USA judges on stage 07527
Demi Lovato joins X Factor USA judges on stage 07528
Demi Lovato joins X Factor USA judges on stage 07529
Demi Lovato joins X Factor USA judges on stage 07530
Demi Lovato joins X Factor USA judges on stage 07531
Demi Lovato joins X Factor USA judges on stage 07532
Demi Lovato joins X Factor USA judges on stage 07533
Demi Lovato joins X Factor USA judges on stage 07534
Demi Lovato joins X Factor USA judges on stage 07535
Demi Lovato joins X Factor USA judges on stage 07536