Demi Lovato joins X Factor USA judges on stage 31981
Demi Lovato joins X Factor USA judges on stage 31982
Demi Lovato joins X Factor USA judges on stage 31983
Demi Lovato joins X Factor USA judges on stage 31984
Demi Lovato joins X Factor USA judges on stage 31985
Demi Lovato joins X Factor USA judges on stage 31986
Demi Lovato joins X Factor USA judges on stage 31987
Demi Lovato joins X Factor USA judges on stage 31988
Demi Lovato joins X Factor USA judges on stage 31989
Demi Lovato joins X Factor USA judges on stage 31990
Demi Lovato joins X Factor USA judges on stage 31991
Demi Lovato joins X Factor USA judges on stage 31992