John Mayer and Katy Perry were spotted having a friendly chat while attending Sabrina Carpenter’s star-studded Los Angeles ...

Katy Perry and John Mayer were spotted catching up at Sabrina Carpenter’s concert in Los Angeles on Sunday — nearly a decade after calling it quits.

Katy Perry and John Mayer, who dated on and off from 2013 to 2015, were spotted chatting at a Sabrina Carpenter concert in Los Angeles ...

The “Who You Love” collaborators, who dated on and off for three years, were spotted chatting at Sabrina Carpenter’s concert in Los Angeles on Sunday.

Katy Perry announces she will make a £1 donation to Music Venue Trust for every ticket sold for her forthcoming UK arena tour. Katy Perry has announced her Lifetimes Tour is coming to the UK in ...

Who says you can’t be friendly with your ex? That’s exactly what Katy Perry and John Mayer did at Sabrina Carpenter’s Sunday, ...

Katy Perry can't stop serving up spicy outfits. Her latest is a skin-baring top that fits in perfectly with her '143' ...

John Mayer and Katy Perry dated on and off between 2012 and 2015, during which they collaborated on the song "Who You Love." ...

A Katy Perry fan stole a strand of the singer’s hair extensions and framed it on the wall as a controversial tribute. A video ...

1 of 5 | Katy Perry attends the Baby2Baby annual gala at the Pacific Design Center on November 9. She announced the U.K. leg ...

Mashable visited the set of Netflix's "Heartbreak High" Season 3, speaking to the cast as well as executive producer Carly ...

Katy Perry has revealed that £1 from every ticket sale for her upcoming 'Lifetimes' jaunt in the U.K. will be donated to the ...