LONDON, UNITED KINGDOM - MAY 02: The announcement of the birth of Prince William, Duke of Cambridge and the Duchess of Cambridge's second child outside Buckingham Palace on May 2, 2015 in London, United Kingdom. Catherine, Duchess of Cambridge delivered the baby girl at 8:34am Saturday and she is the fourth in line to the throne and the Queen's fifth great-grandchild. (Photo by Chip Somodevilla/Getty Images)
