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OTRC: William & Kate grace Vanity Fair cover, set to visit Canada, U.S. (Photo)

Prince William and his new wife Kate, also known as Catherine, Duchess of Cambridge, appear in a never-before-seen photo on the cover of Vanity Fair magazine's July 2011 issue ahead of their trip to Canada and the United States.

The picture was taken by famed photographer Mario Testino at St. James Palace in November 2010, when the prince, who is second in line to the British throne, and Kate Middleton announced their engagement. Testino had also captured an iconic image of William's mother, the late Princess Diana.

William married his bride in London on April 29 in a ceremony watched by millions of people around the world, including more than 22 million viewers in the United States.

The British Monarchy has said that Kate's official royal title is Catherine, Duchess of Cambridge. However, Vanity Fair quoted its writer Katie Nicholl, who penned the cover story, as saying that William "made it clear at the wedding that he will continue to be addressed as Prince William, meaning Kate by default will be Princess Catherine."

Earlier this month, the two honeymooned in Seychelles, an archipelago on the Indian Ocean.

The couple will embark on their first North American trip as a royal couple next month. They will tour Canada from June 30 to July 8, with stops in Ottawa, Ontario, Montreal, Quebec City and Calgary, Alberta. On July 8, William and Kate will fly to Los Angeles and are expected to depart on July 10.

Earlier this month, U.S. President Barack Obama and his wife Michelle visited the royal couple and the Queen, William's grandmother, at Buckingham Palace in London (see photos).

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