Demi Lovato joins X Factor USA judges on stage 24513
Demi Lovato joins X Factor USA judges on stage 24514
Demi Lovato joins X Factor USA judges on stage 24515
Demi Lovato joins X Factor USA judges on stage 24516
Demi Lovato joins X Factor USA judges on stage 24517
Demi Lovato joins X Factor USA judges on stage 24518
Demi Lovato joins X Factor USA judges on stage 24519
Demi Lovato joins X Factor USA judges on stage 24520
Demi Lovato joins X Factor USA judges on stage 24521
Demi Lovato joins X Factor USA judges on stage 24522
Demi Lovato joins X Factor USA judges on stage 24523
Demi Lovato joins X Factor USA judges on stage 24524