Demi Lovato joins X Factor USA judges on stage 26993
Demi Lovato joins X Factor USA judges on stage 26994
Demi Lovato joins X Factor USA judges on stage 26995
Demi Lovato joins X Factor USA judges on stage 26996
Demi Lovato joins X Factor USA judges on stage 26997
Demi Lovato joins X Factor USA judges on stage 26998
Demi Lovato joins X Factor USA judges on stage 26999
Demi Lovato joins X Factor USA judges on stage 27000