LONDON, ENGLAND - MAY 07: Catherine, Duchess of Cambridge views a photo of Captain Tom Moore alongside Curator Magda Keaney during a visit to the archive in the National Portrait Gallery in central London to mark the publication of the 'Hold Still' book on May 7, 2021 in London, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Getty Images

Getty Images Entertainment WPA Pool

LONDON, ENGLAND - MAY 07: Catherine, Duchess of Cambridge views archive photos alongside Curator Magda Keaney during a visit to the archive in the National Portrait Gallery in central London to mark the publication of the 'Hold Still' book on May 7, 2021 in London, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Getty Images

Getty Images Entertainment WPA Pool

LONDON, ENGLAND - MAY 07: Catherine, Duchess of Cambridge and Curator Magda Keaney during a visit to the archive in the National Portrait Gallery in central London to mark the publication of the 'Hold Still' book on May 7, 2021 in London, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Getty Images

Getty Images Entertainment WPA Pool

LONDON, ENGLAND - MAY 07: Catherine, Duchess of Cambridge talks to 'Hold Still' entrants Naz Maleknia (centre) and Claudia Burton (right) during a visit to the archive in the National Portrait Gallery in central London to mark the publication of the 'Hold Still' book on May 7, 2021 in London, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Getty Images

Getty Images Entertainment WPA Pool

LONDON, ENGLAND - MAY 07: Catherine, Duchess of Cambridge talks to 'Hold Still' entrants during a visit to the archive in the National Portrait Gallery in central London to mark the publication of the 'Hold Still' book on May 7, 2021 in London, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Getty Images

Getty Images Entertainment WPA Pool