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 ...

For her fifth tour and first since her Las Vegas residency, Katy Perry is embracing technology. Or maybe battling it. Perry’s Lifetimes tour kicked off its U.S. leg at Houston’s Toyota Center May 7, ...