Christina Aguilera and Demi Lovato will perform with the joint song “Fall in Line” at the “Billboard Music Awards”

Christina Aguilera and Demi Lovato will perform with the joint song “Fall in Line” at the “Billboard Music Awards” 

Christina Aguilera and Demi Lovato will perform with the joint song “Fall in Line” at the “Billboard Music Awards” ceremony, which will be held on May 20.