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Britain's Camilla, Duchess of Cornwall, the Patron of UK Harvest, attends the UK CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation in London on March 21, 2017. / AFP PHOTO / POOL / Eddie MULHOLLAND (Photo credit should read EDDIE MULHOLLAND/AFP/Getty Images)

Britain's Camilla, Duchess of Cornwall, the Patron of UK Harvest, attends the UK CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation in London on March 21, 2017. / AFP PHOTO / POOL / Eddie MULHOLLAND        (Photo credit should read EDDIE MULHOLLAND/AFP/Getty Images)

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LONDON, UNITED KINGDOM - MARCH 21: Camilla, Duchess of Cornwall, the patron of UK Harvest, chef Jamie Oliver and Peter Harding, CEO of Lucozade Ribena Suntory, attend the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

LONDON, UNITED KINGDOM - MARCH 21:  Camilla, Duchess of Cornwall, the patron of UK Harvest, chef Jamie Oliver and Peter Harding, CEO of Lucozade Ribena Suntory, attend the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

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LONDON, UNITED KINGDOM - MARCH 21: Camilla, Duchess of Cornwall, the patron of UK Harvest, chef Jamie Oliver and Peter Harding, CEO of Lucozade Ribena Suntory, attend the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

LONDON, UNITED KINGDOM - MARCH 21:  Camilla, Duchess of Cornwall, the patron of UK Harvest, chef Jamie Oliver and Peter Harding, CEO of Lucozade Ribena Suntory, attend the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

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LONDON, UNITED KINGDOM - MARCH 21: Camilla, Duchess of Cornwall, the patron of UK Harvest, and Emma Bunton attend the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

LONDON, UNITED KINGDOM - MARCH 21:  Camilla, Duchess of Cornwall, the patron of UK Harvest, and Emma Bunton attend the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

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LONDON, UNITED KINGDOM - MARCH 21: Camilla, Duchess of Cornwall, the patron of UK Harvest, attends the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)

LONDON, UNITED KINGDOM - MARCH 21:  Camilla, Duchess of Cornwall, the patron of UK Harvest, attends the CEO Cook Off in support of UK Harvest and the Jamie Oliver Food Foundation, at Old Billingsgate on March 21, 2017 in London, England. (Photo by Eddie Mulholland - WPA Pool /Getty Images)