On Monday, April 28, the "Teenage Dream" singer shared pictures and videos from Lady Gaga 's Sunday night concert in Mexico ...

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 ...

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

Shortly after dancing to the Poker Face singer's hits, Katy took to her Instagram Stories to praise the performance.

Lady Gaga came back to perform in Mexico City after a 13-year-long break, and Katy Perry was there to support her.

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 ...

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

Cause you’re hot, then you’re cold. Lily Allen has apologized for “being mean” to Katy Perry over her controversial Blue ...

Katy Perry’s space-inspired outfit for her tour is getting mixed reactions, especially after her Blue Origin flight. Some ...

U.S. president’s 90-day break ‘a welcome reprieve’ for world economy, Carney says ...

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