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

Katy Perry is singing the praises of fellow pop superstar Lady Gaga after catching her brand new tour. The "Firework" singer ...

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

Katy Perry wants her KatyCats to know she's doing alright, even as she faces a barrage of hate online. On Tuesday, the pop ...

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

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 enjoyed an evening at Lady Gaga’s Mayhem Tour in Mexico City, praising the 14-time Grammy award winner on putting ...

It was one small step for Katy Perry when she stepped out of a space capsule earlier this month and kissed the Texas terra ...

Katy Perry is being roasted by fans over her bizarre space-inspired outfit from her Lifetimes Tour. The singer, 40, rocked ...

Katy Perry has revealed why she hasn't been able to perform at her best after kicking off her "Lifetimes" tour on Wednesday ...

Katy Perry fans were "Hot N Cold" about the singer's out-of-this-world wardrobe on her Lifetimes Tour. Perry, 40, revealed a ...

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