Former Canadian Prime Minister Justin Trudeau and Katy Perry had dinner together in Montreal this week.

Justin Trudeau was all smiles and full of energy as he grooved along to Katy Perry's hits during her "Lifetimes" tour stop.

Justin Trudeau was lit up like a firework at Katy Perry’s Montreal concert Wednesday night. Fresh off his dinner date with the “Dark Horse” pop star, the former Canadian prime minister, accompanied by his teenage daughter, was spotted beaming and singing along to Perry’s greatest hits at the singer’s Bell Centre stop on her Lifetimes tour.