Britain's Catherine, Duchess of Cambridge smiles as she leaves a national service of thanksgiving for the Queen's Diamond Jubilee at Saint Paul's Cathedral in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations with a thanksgiving service and ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / POOL / TIM HALES