See New Canadian Prime Minister Justin Trudeau's Life in Pictures

Justin Trudeau at Winchester, MA in 1977.

Margaret Thatcher, Pierre Trudeau and Justin Trudeau in London, in 1980.

Justin Trudeau pictured at age 14 in Toronto, in 1986.

Pierre Trudeau, Margaret Kemper and Justin Trudeau after attending a memorial to Michel Trudeau in Montreal, in 1998.

Justin Trudeau breaks down on his father's casket after reading the eulogy, in Montreal, in 2000.

Justin Trudeau and Sophie Gregoire leave following their wedding ceremony in his father's 1959 Mercedes 300SL in Montreal, in 2005.

Justin Trudeau in his campaign office in 2008 in Montreal, two days before the federal elections.

Justin Trudeau and his son Hadrien in Gatineau, Quebec in 2015.

Justin Trudeau and Sophie Gregoire-Trudeau wave with their children on election day in Montreal, on Oct. 19, 2015.

Justin Trudeau attends a campaign rally in Halifax, Nova Scotia, on Oct. 17, 2015.

Justin Trudeau, Canada's prime minister-elect, and his wife Sophie Gregoire-Trudeau wave to supporters on election night in Montreal, on Oct. 20, 2015.