EDINBURGH, SCOTLAND - MAY 27: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Beating of the Retreat at the Palace of Holyroodhouse on May 27, 2021 in Edinburgh, Scotland. (Photo by Jane Barlow-WPA Pool/Getty Images)
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EDINBURGH, SCOTLAND - MAY 27: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Beating of the Retreat at the Palace of Holyroodhouse on May 27, 2021 in Edinburgh, Scotland. (Photo by Jane Barlow-WPA Pool/Getty Images)
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EDINBURGH, SCOTLAND - MAY 27: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge sit with Lieutenant Colonel Craig Stewart (left), during a Beating of the Retreat at the Palace of Holyroodhouse on May 27, 2021 in Edinburgh, Scotland. (Photo by Jane Barlow-WPA Pool/Getty Images)
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EDINBURGH, SCOTLAND - MAY 27: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge and Mila Sneddon, 5, with her sister Jodi, and parents Lynda and Scott Sneddon, who are special guests of the Duke and Duchess, during a Beating of the Retreat at the Palace of Holyroodhouse on May 27, 2021 in Edinburgh, Scotland. Cancer patient Mila features in an image from the Hold Still photography project which showed her kissing her father Scott through a window whilst she was shielding during her chemotherapy treatment. (Photo by Jane Barlow-WPA Pool/Getty Images)
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EDINBURGH, SCOTLAND - MAY 27: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Beating of the Retreat at the Palace of Holyroodhouse on May 27, 2021 in Edinburgh, Scotland. (Photo by Jane Barlow-WPA Pool/Getty Images)
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