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Moroccan Princess lalla Hassna attends a conference during the COP22 international climate conference on November 12, 2016 in the Moroccan city of Marrakesh. / AFP / FADEL SENNA (Photo credit should read FADEL SENNA/AFP/Getty Images)

Moroccan Princess lalla Hassna attends a conference during the COP22 international climate conference on November 12, 2016 in the Moroccan city of Marrakesh.  / AFP / FADEL SENNA        (Photo credit should read FADEL SENNA/AFP/Getty Images)

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LONDON, ENGLAND - NOVEMBER 12: (L-R) Timothy Laurence, Princess Anne, Princess Royal, Prince Charles, Prince of Wales, Camilla, Duchess of Cornwall and Prince Andrew, Duke of York attend the annual Royal Festival of Remembrance at the Royal Albert Hall on November 12, 2016 in London, England. (Photo by Victoria Jones-WPA Pool/Getty Images)

LONDON, ENGLAND - NOVEMBER 12: (L-R) Timothy Laurence, Princess Anne, Princess Royal, Prince Charles, Prince of Wales, Camilla, Duchess of Cornwall and Prince Andrew, Duke of York attend the annual Royal Festival of Remembrance at the Royal Albert Hall on November 12, 2016 in London, England. (Photo by Victoria Jones-WPA Pool/Getty Images)

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Princess Maha Chakri Sirindhorn (C) eldest daughter of the late King of Thailand Bhumibol Adulyadej visit Prambanan Temple, Yogyakarta, Indonesia, on 10 November, 2016. Activities in Yogyakarta was to visit Prambanan Temple, Borobudur Temple and palace of Yogyakarta known as ' Keraton'. (Photo by Pradita Utama/NurPhoto via Getty Images)

Princess Maha Chakri Sirindhorn (C) eldest daughter of the late King of Thailand Bhumibol Adulyadej visit Prambanan Temple, Yogyakarta, Indonesia, on 10 November, 2016. Activities in Yogyakarta was to visit Prambanan Temple, Borobudur Temple and palace of Yogyakarta known as ' Keraton'. (Photo by Pradita Utama/NurPhoto via Getty Images)

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Princess Maha Chakri Sirindhorn (C) eldest daughter of the late King of Thailand Bhumibol Adulyadej take a picture during visit Prambanan Temple, Yogyakarta, Indonesia, on 10 November, 2016. Activities in Yogyakarta was to visit Prambanan Temple, Borobudur Temple and palace of Yogyakarta known as ' Keraton'. (Photo by Pradita Utama/NurPhoto via Getty Images)

Princess Maha Chakri Sirindhorn (C) eldest daughter of the late King of Thailand Bhumibol Adulyadej take a picture during visit Prambanan Temple, Yogyakarta, Indonesia, on 10 November, 2016. Activities in Yogyakarta was to visit Prambanan Temple, Borobudur Temple and palace of Yogyakarta known as ' Keraton'. (Photo by Pradita Utama/NurPhoto via Getty Images)

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Princess Maha Chakri Sirindhorn (C) eldest daughter of the late King of Thailand Bhumibol Adulyadej visit Prambanan Temple, Yogyakarta, Indonesia, on 10 November, 2016. Activities in Yogyakarta was to visit Prambanan Temple, Borobudur Temple and palace of Yogyakarta known as ' Keraton'. (Photo by Pradita Utama/NurPhoto via Getty Images)

Princess Maha Chakri Sirindhorn (C) eldest daughter of the late King of Thailand Bhumibol Adulyadej visit Prambanan Temple, Yogyakarta, Indonesia, on 10 November, 2016. Activities in Yogyakarta was to visit Prambanan Temple, Borobudur Temple and palace of Yogyakarta known as ' Keraton'. (Photo by Pradita Utama/NurPhoto via Getty Images)