A Town Crier announces the birth of a baby boy born to Britain's Prince Harry and Meghan, the Duchess of Sussex, outside Windsor Castle in Windsor, South England. (AP Photo/Alastair Grant)Footmen Stephen Kelly and Sarah Thompson bring out the easel in the forecourt of Buckingham Palace to formally announce the birth of a baby boy to Prince Harry and Meghan. (Yui Mok/Pool Photo via AP)This image taken from the Instagram feed of Sussex Royal on Monday May 6, 2019, shows the announcement of Meghan, Duchess of Sussex giving birth to a baby boy. (@sussexroyal via AP)A notice placed on an easel in the forecourt of Buckingham Palace formally announces the birth of a baby boy to Britain's Prince Harry and Meghan, the Duchess of Sussex. (Yui Mok/Pool Photo via AP)Members of the media gather outside Windsor Castle in Windsor, South England, after Prince Harry announced that his wife Meghan, Duchess of Sussex, has given birth to a boy. (AP Photo/Alastair Grant)Well-wishers gather outside the gates of Buckingham Palace in London, Monday May 6, 2019, after Prince Harry announced that his wife Meghan has given birth to a boy. (AP Photo/Vudi Xhymshiti)Fans celebrate outside Windsor Castle in Berkshire after the news of the birth of a baby boy born to Prince Harry and Meghan, Duchess of Sussex, Monday May 6, 2019. (Dominic Lipinski/PA via AP)People gather outside Buckingham Palace in London, Monday May 6, 2019, after Prince Harry announced his wife Meghan, Duchess of Sussex had given birth to a baby boy. (Yui Mok/PA via AP)Well-wishers gather outside Windsor Castle in Windsor, South England, after Prince Harry announced that his wife Meghan, Duchess of Sussex, has given birth to a boy. (AP Photo/Alastair Grant)Well-wishers gather outside Windsor Castle in Windsor, South England, after Prince Harry announced that his wife Meghan, Duchess of Sussex, has given birth to a boy. (AP Photo/Alastair Grant)Members of the media gather outside Windsor Castle in Windsor, South England, Monday May 6, 2019, after Prince Harry announced that his wife Meghan has given birth to a boy. (AP Photo/Alastair Grant)March 11, 2019 file photo: Prince Harry and Meghan, the Duchess of Sussex leave after the Commonwealth Service at Westminster Abbey in London. (AP Photo/Frank Augstein)Prince Harry speaks at Windsor Castle after his wife Meghan, the Duchess of Sussex gave birth to a baby boy. This is their first child, after they got married a year ago. (Steve Parsons/Pool via AP)Prince Harry speaks at Windsor Castle after his wife Meghan, the Duchess of Sussex gave birth to a baby boy. This is their first child, after they got married a year ago. (Steve Parsons/Pool via AP)Prince Harry speaks at Windsor Castle after his wife Meghan, the Duchess of Sussex gave birth to a baby boy. This is their first child, after they got married a year ago. (Steve Parsons/Pool via AP)Prince Harry speaks at Windsor Castle after his wife Meghan, the Duchess of Sussex gave birth to a baby boy. This is their first child, after they got married a year ago. (Steve Parsons/Pool via AP)File photo: Jan 30, 2019: Meghan, The Duchess of Sussex, leaves after visiting the National Theatre in London. (AP Photo/Kirsty Wigglesworth)Dec 1, 2017 file photo: Prince Harry and his fiancee Meghan Markle arrive at Nottingham Academy in Nottingham, England. (AP Photo/Frank Augstein)