Duchess of Cornwall

 THIEPVAL, FRANCE - JULY 1: Prince Harry, Catherine, Duchess of Cornwall and Prince William, Duke of Cambridge during the Commemoration of the Centenary of the Battle of the Somme at the Commonwealth War Graves Commission Thiepval Memorial on July 1, 2016 in Thiepval, France. The event is part of the Commemoration of the Centenary of the Battle of the Somme at the Commonwealth War Graves Commission Thiepval Memorial in Thiepval, France, where 70,000 British and Commonwealth soldiers with no known grave are commemorated. (Photo by Andrew Matthews - Pool/Getty Images)***BESTPIX***

Andrew Matthews/Pool/Getty

Prince Harry, Catherine, Duchess of Cornwall and Prince William, Duke of Cambridge during the Commemoration of the Centenary of the Battle of the Somme at the Commonwealth War Graves Commission Thiepval Memorial in Thiepval, France

Britain's Prince Charles, Prince of Wales (L) and his wife Britain's Camilla, Duchess of Cornwall prepare to try produce inside McGettigans Butchers store in Donegal, north-west Ireland, on May 25, 2016. / AFP PHOTO / PAUL FAITHPAUL FAITH/AFP/Getty Images

Paul Faith/AFP/Getty

Britain’s Prince Charles, Prince of Wales and his wife Camilla, Duchess of Cornwall try produce inside McGettigans Butchers store in Donegal, north-west Ireland

Royal visit to Northern Ireland...Well wishers wait for the arrival of the Prince of Wales and the Duchess of Cornwall in Broughshane, Co Antrim during their visit to Northern Ireland. PRESS ASSOCIATION Photo. Picture date: Tuesday June 25, 2013. See PA story ROYAL Ulster

Julien Behal/PA

Well wishers wait for the arrival of the Prince of Wales and the Duchess of Cornwall in Broughshane, Co Antrim during their visit to Northern Ireland on Tuesday