With the royal wedding season upon us, here at HELLO!, we have decided to look back at Autumn and Peter Phillips' big day. The couple, who are celebrating their 11th wedding anniversary on Friday, were the first of the Queen's grandchildren (or granddaughter-in-law and grandson to be more specific) to get married. The nuptials, which took place in St. George's Chapel at Windsor Castle on 17 May 2008, were attended by several senior members of the royal family. However, the Duchess of Cambridge - then known as Kate Middleton - was forced to make a solo appearance as Prince William had a previous invitation. The royal was attending the wedding of his ex-girlfriend Jecca Craig's brother in Kenya.