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

Katy Perry was spotted in the crowd watching Lady Gaga in Mexico City after her own tour was hit with disaster as she was ...

The Little Monster-KatyCat stan wars can stop: these pop divas are friends! On Sunday night, Katy Perry was spotted in the ...

Lady Gaga came back to perform in Mexico City after a 13-year-long break, and Katy Perry was there to support her.

American singer, songwriter, and TV personality Katy Perry launched into space on a Blue Origin rocket and returned to Earth ...

Katy Perry has gushed about fellow pop star Lady Gaga. In addition to her kind words, the Last Friday Night singer shared a ...

Lady Gaga returned to Mexico City this weekend, thrilling fans at Estadio GNP Seguros with a theatrical spectacle and a ...

Lady Gaga starts off her international tour by reading an emotional letter to her fans, followed by the debut of 'Blade of Grass,' which she wrote for her fiancé, Michael Polansky. Katy Perry, who's ...

But that musical milestone in space history could have looked very different, because Katy Perry isn't the first performer ...

Katy Perry loves sharing her woman's world with Lady Gaga. In the crowd at Mother Monster's ¡Viva La Mayhem! concert in ...

Katy Perry took a break from her own tour to show some love for Lady Gaga during a packed concert in Mexico City over the ...