We urgently want Jessie J to make a feat. with Demi Lovato, they've sang Bang Bang together, they are friends and interact a lot on Instagram, they promised to do something together and we never got these treats, we can't wait any longer, the world needs this collab, so who supports this wonder and dreams of seeing these two queens together, sign and pass it on to other people to sign too. Let's get this petition to them.