Justin Trudeau is seeing fireworks when it comes to Katy Perry. The former Canadian Prime Minister, 53, was standing nearly front row at Perry's Wednesday, July 30, Lifetimes Tour sold-out concert at Belle Centre in Montreal, Canada. Per footage circulating online, Trudeau could be seen nodding his head to the music and smiling as Perry, 40, performed one of her hits on stage. He kept it casual for the event, blending in with the crowd in a black T-shirt and pants.