LONDON, UNITED KINGDOM - MAY 13: Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge backstage with Samantha Davidson and her children Jayden, 8, Jamie, 6, Amelia, 4, as they host a tea party in the grounds of Buckingham Palace to honour the children of those who have died serving in the armed forces on May 13, 2017 in London, England. (Photo by Andrew Parsons - WPA Pool/Getty Images)