Justin Trudeau attends the 44th Vancouver Chinatown Spring Festival Parade on Jan. 29, 2017 in Vancouver. (Darryl Dyck/CP)Screenshot of Youtube Video Named“ Justin Trudeau WWI Documentary Interview (The Great War, 2007)”Justin Trudeau dressed up for the 2010 Montreal Movember Gala. (Justin Trudeau/Facebook)Prime Minister Justin Trudeau shows off his costume as Clark Kent, alter ego of comic book superhero Superman, as he walks through the House of Commons, in Ottawa on Tuesday, Oct. 31, 2017. (Adrian Wyld/CP)Prime Minister-designate Justin Trudeau, dressed as Han Solo from The Empire Strikes Back, walks with his children Hadrien (second from right), Ella-Grace and Xavier, as his wife Sophie Gregoire-Trudeau, dressed as Princess Leia, jokes with onlookers as the family prepares to go trick-or-treating on Halloween in Ottawa on Saturday, Oct. 31, 2015. (Justin Tang/CP)Prime Minister Justin Trudeau, dressed as the Pilot from The Little Prince, right, and his son Hadrien, dressed as the Little Prince, arrive at Rideau Hall to go trick-or-treating, on Halloween, Monday, Oct. 31, 2016 in Ottawa. (Justin Tang/CP)Justin Trudeau dressed up for the 2011 Montreal Movember Gala. (Justin Trudeau/Facebook)