Demi Lovato joins X Factor USA judges on stage 24537
Demi Lovato joins X Factor USA judges on stage 24538
Demi Lovato joins X Factor USA judges on stage 24539
Demi Lovato joins X Factor USA judges on stage 24540
Demi Lovato joins X Factor USA judges on stage 24541
Demi Lovato joins X Factor USA judges on stage 24542
Demi Lovato joins X Factor USA judges on stage 24543
Demi Lovato joins X Factor USA judges on stage 24544
Demi Lovato joins X Factor USA judges on stage 24545
Demi Lovato joins X Factor USA judges on stage 24546
Demi Lovato joins X Factor USA judges on stage 24547
Demi Lovato joins X Factor USA judges on stage 24548