In a dazzling display of royal pomp and pageantry,Prince William and Catherine Middleton tied the knot today at Westminster Abbey. Die-hard fans camped out across the street from the Abbey to catch glimpses of the royal couple and their 1,900 guests arriving for the ceremony. The crowds roared as a dashing Prince William – wearing a striking red tunic of the Irish Guard Colonel, his highest honorary appointment – and best man Harry arrived at the Abbey.Catherine, 29, arrived in Queen Elizabeth's custom Rolls Royce limousine, known as the Phantom VI, to become a royal and begin life in the glare of the media spotlight. Hundreds of millions tuned in to watch the pair exchange vows to become the Duke and Duchess of Cambridge. The marriage between 28-year-old Prince William, second in line to the throne, and Catherine, has cemented a recovery in the monarchy's popularity. British prime minister David Cameron says the royal wedding has been a touching moment for his country.