Katy Perry and Lady Gaga. Friends? Rivals? Maybe the only time these pop divas have been mentioned in the same sentence recently is when Perry went to see Gaga’s Mexico City concert in April.

"Katy Perry is the most mocked woman in the world right now." This observation was made by Jessie Stephens on Mamamia's Out ...

The Grammy-nominated pop star just launched the first U.S. leg of her new "The Lifetimes Tour" May 7 in Houston and now is ...

The Grammy-nominated pop star just launched the first U.S. leg of her new "The Lifetimes Tour" May 7 in Houston and now is ...

During her Lifetimes tour, Katy Perry was in the middle of performing her song Last Friday Night when she responded to ...

Katy Perry isn’t letting the backlash surrounding last month’s controversial Blue Origin flight into space get her down too ...

Katy Perry is getting futuristic on her new Lifetimes tour, which kicked off its North American run May 7 in Houston. Here ...

Katy Perry is all set to kick off the U.S. leg of her Lifetime tour after wrapping up the concert series in Mexico City. On ...

Katy Perry is a superstar at a crossroads. She has been mocked mercilessly for an 11-minute flight on a Blue Origin spaceship ...

Katy Perry is bringing her Lifetimes Tour to the U.S. Wednesday, kicking off in Houston at the Toyota Center — and fans will get a chance to be a part of the interactive event.

During each event, fans can scan a QR code from one of her albums and vote on a song they want her to perform The US leg of ...

Katy Perry headlines the United Center, the Opera Festival of Chicago gets underway, and Ballet Chicago presents a showcase of George Balanchine classics. These are among the highlights in the week ...