Demi Lovato joins X Factor USA judges on stage 19981
Demi Lovato joins X Factor USA judges on stage 19982
Demi Lovato joins X Factor USA judges on stage 19983
Demi Lovato joins X Factor USA judges on stage 19984
Demi Lovato joins X Factor USA judges on stage 19985
Demi Lovato joins X Factor USA judges on stage 19986
Demi Lovato joins X Factor USA judges on stage 19987
Demi Lovato joins X Factor USA judges on stage 19988
Demi Lovato joins X Factor USA judges on stage 19989
Demi Lovato joins X Factor USA judges on stage 19990
Demi Lovato joins X Factor USA judges on stage 19991
Demi Lovato joins X Factor USA judges on stage 19992