Fans at a Jessie J concert last night in San Jose, California got a huge surprise!
The songstress brought out Demi Lovato to sing Ariana Grande’s part in “Bang Bang.”
You could barely hear Demi when she took the stage, not because of technical difficulties, but because of the screaming fans!
Wait until you hear this!
Who do you think sings it better, Demi or Jessie?
Click here for the photos!
Latest Mix Stories: