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 filmed dancing at Katy Perry's Lifetimes Tour show in Montreal on Wednesday, 30 July. Video shows the former Canadian prime minister, 53, watching along as the "Roar" singer, 40, flew over the crowd on a giant butterfly at the Bell Centre.

Justin Trudeau was totally vibing as he heard Katy Perry "Roar" at Wednesday's "Lifetimes" tour! Several videos posted by fellow concertgoers show the former Canadian Prime Minister with a cautious grin on his face