Katy Perry said to me, 'Hey I've got this song, I've been writing and I think you should do it. I just keep picturing you on it,'" Iggy explains to ABC News Radio. "That's how my collaboration with her kind of began: first we had a friendship and then she wrote something that she had me in mind for. And, being that her album was already out, I said, 'Will you let me have this for my album?'" Iggy laughs, "And she did me the kindness!"
