Demi Lovato joins X Factor USA judges on stage 27969
Demi Lovato joins X Factor USA judges on stage 27970
Demi Lovato joins X Factor USA judges on stage 27971
Demi Lovato joins X Factor USA judges on stage 27972
Demi Lovato joins X Factor USA judges on stage 27973
Demi Lovato joins X Factor USA judges on stage 27974
Demi Lovato joins X Factor USA judges on stage 27975
Demi Lovato joins X Factor USA judges on stage 27976
Demi Lovato joins X Factor USA judges on stage 27977
Demi Lovato joins X Factor USA judges on stage 27978
Demi Lovato joins X Factor USA judges on stage 27979
Demi Lovato joins X Factor USA judges on stage 27980