Demi Lovato joins X Factor USA judges on stage 05983
Demi Lovato joins X Factor USA judges on stage 05984
Demi Lovato joins X Factor USA judges on stage 05985
Demi Lovato joins X Factor USA judges on stage 05986
Demi Lovato joins X Factor USA judges on stage 05987
Demi Lovato joins X Factor USA judges on stage 05988
Demi Lovato joins X Factor USA judges on stage 05989
Demi Lovato joins X Factor USA judges on stage 05990
Demi Lovato joins X Factor USA judges on stage 05991
Demi Lovato joins X Factor USA judges on stage 05992
Demi Lovato joins X Factor USA judges on stage 05993
Demi Lovato joins X Factor USA judges on stage 05994