Demi Lovato joins X Factor USA judges on stage 04994
Demi Lovato joins X Factor USA judges on stage 04995
Demi Lovato joins X Factor USA judges on stage 04996
Demi Lovato joins X Factor USA judges on stage 04997
Demi Lovato joins X Factor USA judges on stage 04998
Demi Lovato joins X Factor USA judges on stage 04999
Demi Lovato joins X Factor USA judges on stage 05000
Demi Lovato joins X Factor USA judges on stage 05001