2016 Royal Tour To Canada Of The Duke And Duchess Of Cambridge - Whitehorse And Carcross, Yukon [Getty Images]

CARCROSS , CANADA - SEPTEMBER 28: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge look at the 'White Press' steam train during there visit to Carcross Commons on September 28, 2016 in Carcross , Canada. (Photo by Danny Martindale/FilmMagic) — see more

CARCROSS , CANADA - SEPTEMBER 28: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge look at the 'White Press' steam train during there visit to Carcross Commons on September 28, 2016 in Carcross , Canada. (Photo by Danny Martindale/FilmMagic)

FilmMagic Danny Martindale