Demi Lovato joins X Factor USA judges on stage 28969
Demi Lovato joins X Factor USA judges on stage 28970
Demi Lovato joins X Factor USA judges on stage 28971
Demi Lovato joins X Factor USA judges on stage 28972
Demi Lovato joins X Factor USA judges on stage 28973
Demi Lovato joins X Factor USA judges on stage 28974
Demi Lovato joins X Factor USA judges on stage 28975
Demi Lovato joins X Factor USA judges on stage 28976
Demi Lovato joins X Factor USA judges on stage 28977
Demi Lovato joins X Factor USA judges on stage 28978
Demi Lovato joins X Factor USA judges on stage 28979
Demi Lovato joins X Factor USA judges on stage 28980