Oh dear, looks like Jessie J is being sued for copyright infringement. The song in question is her second UK number one hit-and no favourite of mine- 2011's Domino.
The song sure did remind me a lot of Katy Perry's Last Friday Night (T.G.I.F.) when it was released, but as it was produced and written by the same people- notably Dr. Luke- it couldn't really be deemed plagiarism or infringment. More sloppy seconds, if you will.

















