Prince William and Catherine, Duchess of Cambridge have kicked off their 11-day North American tour in Canada – their first overseas engagement as a married couple. Kate paid tribute to her hosts, stepping onto the runway in a midnight-blue lace dress with stone shaded lining by oontreal-based designer Erdem. As the couple exited the plane, a commemorative flag designed specially for the prince was flown from the cockpit window. The pair was then greeted by oinister of Foreign Affairs John Baird, who escorted them to their awaiting motorcade. The couple’s trip will see them travel across the country before heading to California in the US between July 8 and 10.