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CAMBERLEY, ENGLAND - NOVEMBER 18: Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

CAMBERLEY, ENGLAND - NOVEMBER 18:  Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England.  (Photo by Mark Cuthbert/UK Press via Getty Images)

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CAMBERLEY, ENGLAND - NOVEMBER 18: Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

CAMBERLEY, ENGLAND - NOVEMBER 18:  Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England.  (Photo by Mark Cuthbert/UK Press via Getty Images)

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CAMBERLEY, ENGLAND - NOVEMBER 18: Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

CAMBERLEY, ENGLAND - NOVEMBER 18:  Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England.  (Photo by Mark Cuthbert/UK Press via Getty Images)

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CAMBERLEY, ENGLAND - NOVEMBER 18: Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

CAMBERLEY, ENGLAND - NOVEMBER 18:  Sophie, Countess of Wessex in her role as Colonel in Chief, Queen Alexandra's Royal Army Nursing Corps attends a picture unveiling at Royal Military Academy Camberley on November 18, 2016 in Camberley, England.  (Photo by Mark Cuthbert/UK Press via Getty Images)

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SANDHURST, UNITED KINGDOM - NOVEMBER 18: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Sophie, Countess of Wessex views a protective suit worm by nurses of the Queen Alexandra's Royal Army Nursing Corps (QARANC) as they took part in Operation Gritrock treating Ebola patients in Sierra Leone during a visit to Royal Military Academy Sandhurst on November 18, 2016 in Sandhurst, England. (Photo by Max Mumby/Indigo/Getty Images)

SANDHURST, UNITED KINGDOM - NOVEMBER 18: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Sophie, Countess of Wessex views a protective suit worm by nurses of the Queen Alexandra's Royal Army Nursing Corps (QARANC) as they took part in Operation Gritrock treating Ebola patients in Sierra Leone during a visit to Royal Military Academy Sandhurst on November 18, 2016 in Sandhurst, England. (Photo by Max Mumby/Indigo/Getty Images)