Demi Lovato joins X Factor USA judges on stage 17993
Demi Lovato joins X Factor USA judges on stage 17994
Demi Lovato joins X Factor USA judges on stage 17995
Demi Lovato joins X Factor USA judges on stage 17996
Demi Lovato joins X Factor USA judges on stage 17997
Demi Lovato joins X Factor USA judges on stage 17998
Demi Lovato joins X Factor USA judges on stage 17999
Demi Lovato joins X Factor USA judges on stage 18000