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

Lady Gaga and Katy Perry attend the Academy Museum of Motion Pictures: Opening Gala honoring Haile Gerima and Sophia Loren, ...

Lady Gaga unleashed her divine chaos in Mexico City, where she held her first concert in 13 years on April 26.

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

A few days after headlining the stage at the Coachella Music Festival, Lady Gaga announced she is bringing her Mayhem Ball ...

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

Lady Gaga's return to Mexico City after more than a decade brought together music and a message that left fans emotional.

You could be forgiven for thinking that the combination of Lady Gaga’s recent Las Vegas jazz residency and her burgeoning ...

Lady Gaga electrified fans last night at Estadio GNP Seguros in Mexico City, wrapping the first of two back-to-back sold-out stadium shows. Fresh off her widely praised headline performances at ...

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 ...

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

Katy Perry has gushed about fellow pop star Lady Gaga. The California Gurls hitmaker was spotted in the crowd at Gaga's ...