Some onlookers might have thought Prince William and Kate Middleton had abandoned their April 29 wedding and tied the knot early in London recently, but it was all part of a book launch.
The book, Kate and Wills up the Aisle by Alison Jackson (who has made a career for herself photographing celebrity look-alikes), takes a humorous "behind closed doors" look at the royal romance and wedding.
For the book launch, look-alikes of Prince William, Kate Middleton, the Queen and Prince Harry dressed in their wedding-day best and performed a number of stunts around London, starting with a horse-drawn carriage at Waterstone's Piccadilly bookshop.
Throughout the day the look-alikes posed for paparazzi-style pictures of the royals in risqué poses.
The launch included the royal couple dining at a KFC restaurant before having a fake wedding ceremony at St Paul's Church, Covent Garden.
See the royal wedding imposters in our video above.