Demi Lovato joins X Factor USA judges on stage 13549
Demi Lovato joins X Factor USA judges on stage 13550
Demi Lovato joins X Factor USA judges on stage 13551
Demi Lovato joins X Factor USA judges on stage 13552
Demi Lovato joins X Factor USA judges on stage 13553
Demi Lovato joins X Factor USA judges on stage 13554
Demi Lovato joins X Factor USA judges on stage 13555
Demi Lovato joins X Factor USA judges on stage 13556
Demi Lovato joins X Factor USA judges on stage 13557
Demi Lovato joins X Factor USA judges on stage 13558
Demi Lovato joins X Factor USA judges on stage 13559
Demi Lovato joins X Factor USA judges on stage 13560