Katy Perry recently shared a series of clips and photos on Instagram stories, showing off Lady Gaga’s Mexico City concert. Perry penned a special message in one story, praising Lady Gaga for her show.

Katy Perry, who recently attended Lady Gaga‘s concert at Estadio GNP Seguros in Mexico City, showered praise on Lady Gaga for her electrifying Viva la Mayhem performance. Accordingly, fans are ...

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.

The California Gurls hitmaker was spotted in the crowd at Gaga's concert in Mexico City, Mexico on Sunday night. Shortly after dancing to the Poker Face singer's hits, Katy took to her Instagram ...

Those who signed support background checks. — -- More than 150 entertainers and executives, including Katy Perry, Lady Gaga and Billy Joel, have signed a special “Open Letter to Congress” urging ...