It is a pairing that few could have predicted: a former prime minister of Canada and an American pop star who has toured the world and reached the edge of space.

Justin Trudeau and Katy Perry have made it official. The couple was spotted by paparazzi holding hands in Paris last weekend as they left the Crazy Horse cabaret, where they had been celebrating Perry's 41st birthday.

While they may seem an unlikely duo, Trudeau and Perry – who have both been in the spotlight for the better part of the last decade – have more in common than some might think. And their budding romance is not entirely unprecedented in the lexicon of Canadian political history.

The pairing also offers a rare glimpse into the private life of Trudeau, who became a global progressive icon after he was catapulted into Canada's highest office in 2015, since he was forced to resign from politics earlier this year after his popularity plummeted.

Perry, similarly, had faced an assortment of undesirable headlines in the last year.