Demi Lovato joins Jessie J on stage to Perform Bang Bang! (@ddlovato @JessieJ)

B4BVfkwIUAAKcT3On Wednesday night (Dec. 3), Jessie J and Demi Lovato performed in San Jose for 99.7 Now!’s 2014 Triple Ho Show.

During Jessie J’s set she brought out Demi Lovato to sing Ariana Grande’s part of “Bang Bang.” The crowd went nuts when Demi walked out on stage. During Nicki’s part Jessie and Demi were both having fun just dancing. We must say Demi played that performance.

After the concert the two singers went to Twitter and Instagram. Demi tweeted, “… That just happened….. Thank you SO much @JessieJ for having me on stage for Bang Bang… It was an honor!” Jessie posted a picture of the two on Instagram with the caption, “WOW!!! @ddlovato is a dream to be on stage with!!! Thank you girl!!! You sang yo ass off!!! #BangBang.”

We hope the two collab in the future! How epic would that be?!

Check out the performance below!