Demi Lovato joins X Factor USA judges on stage 20993
Demi Lovato joins X Factor USA judges on stage 20994
Demi Lovato joins X Factor USA judges on stage 20995
Demi Lovato joins X Factor USA judges on stage 20996
Demi Lovato joins X Factor USA judges on stage 20997
Demi Lovato joins X Factor USA judges on stage 20998
Demi Lovato joins X Factor USA judges on stage 20999
Demi Lovato joins X Factor USA judges on stage 21000