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 ...