LONDON, ENGLAND - AUGUST 30:  Prince William, Duke of Cambridge meets well wishers and views tributes to Princess Diana after a visit to The Sunken Garden at Kensington Palace on August 30, 2017 in London, England.  The garden has been transformed into a White Garden dedicated in the memory of Princess Diana, mother of The Duke of Cambridge and Prince Harry.  (Photo by Mark Cuthbert/UK Press via Getty Images)