Katy Perry and Lady Gaga. Friends? Rivals? Maybe the only time these pop divas have been mentioned in the same sentence ...

Katy Perry supported Lady Gaga at her Mexico City concert on Sunday, April 27, days after Perry launched her Lifetimes Tour.

Every single Beyoncé tour gains acclaim, without question. Her tour supporting Cowboy Carter has been no different, with the ...

The "Woman's World" artist added that she's "grateful to grow up" with Mother Monster. By Hannah Dailey Katy Perry loves sharing her woman’s world with Lady Gaga. In the crowd at Mother Monster’s ...

On Sunday night, Katy Perry was spotted in the crowd at Lady Gaga‘s concert in Mexico City, a day after Perry’s performance there. Little Monsters spotted Perry at Estadio GNP Seguros as she ...

But that musical milestone in space history could have looked very different, because Katy Perry isn't the first performer with space ambitions. In fact, megastars Lance Bass, Beyonce, Lady Gaga and ...

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 ...

By Hannah Dailey Katy Perry loves sharing her woman’s world with Lady Gaga. In the crowd at Mother Monster’s ¡Viva La Mayhem! concert in Mexico City Saturday (April 26), the “Firework ...

Katy Perry's Lifetimes Tour is a high-flying, video game-inspired show, but online backlash has overshadowed the pop star’s ...