Demi Lovato joins X Factor USA judges on stage 13993
Demi Lovato joins X Factor USA judges on stage 13994
Demi Lovato joins X Factor USA judges on stage 13995
Demi Lovato joins X Factor USA judges on stage 13996
Demi Lovato joins X Factor USA judges on stage 13997
Demi Lovato joins X Factor USA judges on stage 13998
Demi Lovato joins X Factor USA judges on stage 13999
Demi Lovato joins X Factor USA judges on stage 14000