Her first set of the night was, as expected, a rendition of "Roar," her eighth No. 1 single on the Hot 100. By Kevin Rutherford, Billboard Crocodiles and elephants and giraffes, oh my! Katy Perry ...

It's barely been 12 hours since its release, and already Katy Perry's new wannabe anthem "Roar" is causing problems for the frequently bewigged singer. See, parts of "Roar" sound a little bit like the ...

Katy Perry is continuing to catch strays, this time from the most biting demographic of all: the pop girlie fandom. As the most awkward of the trio, Wiig's Dooneese has tiny hands and a large forehead ...

Katy Perry's Lifetimes Tour had fans buggin' out on Friday. The pop star endured a scary prop malfunction while performing at the Chase Center in San Francisco during her most recent show. Fan videos ...

Elton John, Bruno Mars, Ke$ha and an Adam Lambert/Queen combo are also heading to Vegas. By Andrew Hampp, Billboard Now entering its third year, iHeartRadio Music ...