Christie Brinkley is pretty in pink in New York City, plus Anna Kendrick, Liam Hemsworth, Nicola Coughlan and more. From ...

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

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 ...

Lady Gaga returned to Mexico City this weekend, thrilling fans at Estadio GNP Seguros with a theatrical spectacle and a ...

Lady Gaga starts off her international tour by reading an emotional letter to her fans, followed by the debut of 'Blade of Grass,' which she wrote for her fiancé, Michael Polansky. Katy Perry, who's ...

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 ...

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 ...