Katy Perry (née Katheryn ... which featured five No.1 singles, including "California Girls," "E.T." and "Firework." She has released five studio albums which have culminated in 50 billion streams ...

To date, Katy Perry has released six studio albums, 39 singles, 11 promotional singles, and seven extended plays. Her albums are: 2010: Teenage Dream, including singles such as California Gurls ...

Pop superstar Katy Perry and Grammy-winning ... Six of her singles, including "Firework," "Dark Horse," and "Roar," and one of her albums, TEENAGE DREAM, have gone diamond, selling more than ...

Opinions expressed by Forbes Contributors are their own. Hugh McIntyre covers music, with a focus on the global charts. LAS VEGAS, NEVADA - APRIL 03: Lady Gaga performs onstage during the 64th ...