Members of the public wait for the Duchess of Cambridge’s birth announcement outside St. Mary’s Hospital in London, England on May 2, 2015.Police officers and sniffer dogs carry out security checks outside St. Mary’s Hospital ahead of the Duchess of Cambridge departure with her new born baby girl in London, England on May 2, 2015.Members of the public wait for the Duchess of Cambridge’s birth announcement outside St. Mary’s Hospital in London, England on May 2, 2015.Unofficial Town Crier Tony Appleton announces The Duchess of Cambridge has given birth to a girl outside St. Mary’s Hospital in London, England on May 2, 2015Unofficial Town Crier Tony Appleton announces The Duchess of Cambridge has given birth to a girl outside St. Mary’s Hospital in London, England on May 2, 2015.Unofficial Town Crier Tony Appleton announces The Duchess of Cambridge has given birth to a girl outside St. Mary’s Hospital in London, England on May 2, 2015.Unofficial Town Crier Tony Appleton announces The Duchess of Cambridge has given birth to a girl outside St. Mary’s Hospital in London, England on May 2, 2015.Members of the media wait for the Duchess of Cambridge’s birth announcement outside St. Mary’s Hospital in London, England on May 2, 2015.Members of the public wait for the Duchess of Cambridge’s birth announcement outside St. Mary’s Hospital in London, England on May 2, 2015.Members of the media wait for the Duchess of Cambridge’s birth announcement outside St. Mary’s Hospital in London, England on May 2, 2015.