Demi Lovato joins X Factor USA judges on stage 27513
Demi Lovato joins X Factor USA judges on stage 27514
Demi Lovato joins X Factor USA judges on stage 27515
Demi Lovato joins X Factor USA judges on stage 27516
Demi Lovato joins X Factor USA judges on stage 27517
Demi Lovato joins X Factor USA judges on stage 27518
Demi Lovato joins X Factor USA judges on stage 27519
Demi Lovato joins X Factor USA judges on stage 27520
Demi Lovato joins X Factor USA judges on stage 27521
Demi Lovato joins X Factor USA judges on stage 27522
Demi Lovato joins X Factor USA judges on stage 27523
Demi Lovato joins X Factor USA judges on stage 27524