Demi Lovato joins X Factor USA judges on stage 31969
Demi Lovato joins X Factor USA judges on stage 31970
Demi Lovato joins X Factor USA judges on stage 31971
Demi Lovato joins X Factor USA judges on stage 31972
Demi Lovato joins X Factor USA judges on stage 31973
Demi Lovato joins X Factor USA judges on stage 31974
Demi Lovato joins X Factor USA judges on stage 31975
Demi Lovato joins X Factor USA judges on stage 31976
Demi Lovato joins X Factor USA judges on stage 31977
Demi Lovato joins X Factor USA judges on stage 31978
Demi Lovato joins X Factor USA judges on stage 31979
Demi Lovato joins X Factor USA judges on stage 31980