She's got the eye of the tiger, and that's why Katy Perry‘s "Roar" music video has skyrocketed to 4 billion YouTube views, ...

Although Katy Perry is best-known for frothy, off-the-walls pop music, the Billboard Hot 100 topper opened her Thursday (Jan.

Katy Perry revealed a major step she has decided to implement during her upcoming Lifetimes Tour. Inspired by her daughter Daisy, the Roar singer told the host in an Access Hollywood interview ...