Katy Perry and Lady Gaga. Friends? Rivals? Maybe the only time these pop divas have been mentioned in the same sentence ...

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 crowd at Lady Gaga's concert in Mexico City, a day after Perry's performance ...

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

Katy Perry is singing the praises of fellow pop superstar Lady Gaga after catching her brand new tour. The "Firework" singer took to her Instagram Stories on Monday (April 28) to share some of the ...

But that musical milestone in space history could have looked very different, because Katy Perry isn't the first performer ...

Katy Perry loves sharing her woman's world with Lady Gaga. In the crowd at Mother Monster's ¡Viva La Mayhem! concert in Mexico City Saturday (April 26), the "Firework" singer was one of tens of ...

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 weekend. The Teenage Dream singer, 40, posted a series of photos and videos on ...