A court found that similarities between Katy Perry's song and the ... figure," the documents say. Perry released "Dark Horse," featuring rapper Juicy J, on her album Prism, and the song topped ...

As the "It Girl" of music videos and tours, she has appeared alongside a virtual Who's Who of chart-topping artists, including: Selena Gomez, Chris Brown, Iggy Azalea, Katy Perry, Jessie J ...