Catherine, Duchess of Cambridge, and Prince William arrive to attend a National Service of Thanksgiving at St Paul's Cathedral to celebrate the Queen's Diamond Jubilee in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations and festivities will conclude with a ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / TIM HALES / POOL