Carole and Michael Middleton, the parents of Kate, Duchess of Cambridge, smile as they arrive at St. Mary's Hospital exclusive Lindo Wing in London, Tuesday July 23, 2013 where the Duchess gave birth on Monday July 22. The Royal couple are expected to head to London's Kensington Palace from the hospital with their newly born son, the third in line to the British throne. (AP Photo/Alastair Grant)