Lady Gaga was the latest artist to experience an onstage glitch. The actress and singer has been on tour over the past weeks, ...

Katy Perry joined in on the Viva La Mayhem fun! On Monday, April 28, the "Teenage Dream" singer shared pictures and videos from Lady Gaga 's Sunday night concert in Mexico City at Estadio GNP Seguros.

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 ...

Lady Gaga’s Mayhem Ball has officially hit stages across the world, from Coachella to her record-breaking Copacabana show ...

Katy Perry is keeping fans updated. On Monday, the former American Idol judge gave fans even more sneak-peeks of her upcoming album, 143, and a rare glimpse into her personal life. In the Instagram ...

Katy Perry has teased that she will be embarking on a 'massive tour' by the end of the year, but fans are skeptical.

Pop superstar Katy Perry and former Canadian Prime Minister Justin Trudeau were spotted having dinner together at a Montreal ...

Among the concert tours hitting Seattle over the next three weeks: Lady Gaga, Death Cab for Cutie, Katy Perry, Paul Simon and ...