Justin Trudeau was feeling the sparks at Katy Perry‘s concert in Montreal, with the former Canadian prime minister passionately belting along to the pop star’s performance of “Firework” while in the ...

Katy Perry is embroiled in some legal fireworks — she’s suing an 86-year-old dying and disabled veteran over a long-standing ...

Katy Perry shared what fans can expect from The Lifetimes Tour in an exclusive interview with E! News: "There might be a section that has some surprises." ...

Martha Stewart says she was into space travel before it got popular among celebrities ... sharing a clip of herself experiencing zero gravity -- and throwing in a cryptic Katy Perry reference. The ...