Did Demi get caught stealing from Katy?

Do you ever listen to a song for the first time and have a nagging feeling that you've heard it before? That's exactly what some people experienced when Demi Lovato debuted her newest single, "Cool for the Summer." Many thought the sound and subject matter of the track resembled Katy Perry's "I Kissed A Girl." But Demi is taking a stand against the haters to defend her song and her creativity! "It sounds nothing like it," she said of her tune in comparison to Katy's. "And with all of the advances we've made in the LGBT community, I think more than one female artist can kiss a girl and like it."