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’s "Poker Face" hits new peaks on Billboard’s global charts 15 years after release, fueled by her standout ...

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

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