LONDON, UNITED KINGDOM - JULY 23: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge leave The Lindo Wing of St Mary's Hospital with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. (Photo by Samir Hussein/WireImage)
LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart The Lindo Wing with their newborn Son at St Mary's Hospital on July 23, 2013 in London, England. (Photo by Julian Parker/UK Press via Getty Images)
LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart The Lindo Wing with their newborn Son at St Mary's Hospital on July 23, 2013 in London, England. (Photo by Julian Parker/UK Press via Getty Images)
