Shortly after dancing to the Poker Face singer's hits, Katy took to her Instagram Stories to praise the performance.

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

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 has said that she feels “so proud” of Lady Gaga, after attending one of the singer’s shows in Mexico.

Lady Gaga has finally performed her first concert in 13 years!On April 26 and April 27, the Grammy winner hit the stage for ...

Following her critically acclaimed performances at Coachella, the superstar kicked off her 58-date headline outing at the ...

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

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

Lady Gaga's 'MAYHEM' tour graced Mexico with a magical performance, marking her return after 13 years. The gothic queen ...

Lady Gaga completed two sold-out stadium shows in Mexico City last night at Estadio GNP Seguros. The shows follow her recent headline sets at Coachella and they kick off a series of international ...

Lady Gaga electrified fans last night at Estadio GNP Seguros in Mexico City, wrapping the first of two back-to-back sold-out ...

When pop extraordinaire Lady Gaga announced plans to tour in Australia, the ensuing frenzy from both fans and casual ...