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

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

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 ...

Once the show finally started, it wasn’t a mere concert, but a high-concept experience meant to mimic an immersive video game ...

Selena Gomez, Ariana Grande, Lady Gaga and Kendrick Lamar each scored a leading four nominations each for the Nickelodeon ...

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 ...