Jessie J's new single, Burnin' Up, has found its way on the web. The single, featuring 2 Chainz, is set to come out tomorrow but has leaked today. The song was produced by Max Martin and is the 2nd single from her upcoming album, Sweet Talker, set to be released on October 10th! It has been reported that the single won't be out in the UK tomorrow, so fans will have to wait a while longer!