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