Demi Lovato joins X Factor USA judges on stage 27957
Demi Lovato joins X Factor USA judges on stage 27958
Demi Lovato joins X Factor USA judges on stage 27959
Demi Lovato joins X Factor USA judges on stage 27960
Demi Lovato joins X Factor USA judges on stage 27961
Demi Lovato joins X Factor USA judges on stage 27962
Demi Lovato joins X Factor USA judges on stage 27963
Demi Lovato joins X Factor USA judges on stage 27964
Demi Lovato joins X Factor USA judges on stage 27965
Demi Lovato joins X Factor USA judges on stage 27966
Demi Lovato joins X Factor USA judges on stage 27967
Demi Lovato joins X Factor USA judges on stage 27968