Demi Lovato joins X Factor USA judges on stage 09597
Demi Lovato joins X Factor USA judges on stage 09598
Demi Lovato joins X Factor USA judges on stage 09599
Demi Lovato joins X Factor USA judges on stage 09600
Demi Lovato joins X Factor USA judges on stage 09601
Demi Lovato joins X Factor USA judges on stage 09602
Demi Lovato joins X Factor USA judges on stage 09603
Demi Lovato joins X Factor USA judges on stage 09604
Demi Lovato joins X Factor USA judges on stage 09605
Demi Lovato joins X Factor USA judges on stage 09606
Demi Lovato joins X Factor USA judges on stage 09607
Demi Lovato joins X Factor USA judges on stage 09608