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

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

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.

At her most recent Lifetimes Tour show, Katy Perry shared an "emotional" moment with her fans in the wake of the heavy ...

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 ...

When Katy Perry announced her Lifetimes Tour, she revealed to Rolling Stone that she'd include a section featuring the ...

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

The singer also seemed to address criticism about her April 14 Blue Origin flightKaty Perry's concert was out of this ...

Houston, we have liftoff. Just 10 days after making headlines for her trip to space, Katy Perry kicked off her highly ...

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