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Bulgaria's ex-King and former Prime Minister Simeon Saxe-Coburg-Gotha poses with friends and priest in Vratsa region, Bulgaria on 17 June 2017. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

Bulgaria's ex-King and former Prime Minister Simeon Saxe-Coburg-Gotha poses with friends and priest  in Vratsa region, Bulgaria on 17 June 2017. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

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Queen Sophia and Bulgarian Bishops pose in Vratsa region, Bulgaria on 17 June 2017. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

Queen Sophia and Bulgarian Bishops pose in Vratsa region, Bulgaria on 17 June 2017. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

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Queen Sofia at the Cherepish Monastery in Vratsa region, Bulgaria for the Birthday of King Simeon II of Bulgaria on June 17th, 2017. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

Queen Sofia at the Cherepish Monastery  in Vratsa region, Bulgaria for the Birthday of King Simeon II of Bulgaria on June 17th, 2017. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

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Queen Sofia Spanish and Queen Margarita Bulgarian in the royal train on the way to Cherepish Monastery for the Birthday of King Simeon II of Bulgaria, June 17th, 2017 (Photo by Plamen Trifonov/NurPhoto via Getty Images)

Queen Sofia Spanish and Queen Margarita Bulgarian in the royal train on the way to Cherepish Monastery for the Birthday of King Simeon II of Bulgaria, June 17th, 2017 (Photo by Plamen Trifonov/NurPhoto via Getty Images)

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Prince Konstantin-Assen Saxe-Coburg-Gotha and Princess Sofia Saxe-Coburg-Gotha on June 17th, 2017 in Vratsa region, Bulgaria for the Birthday of King Simeon II of Bulgaria. (Photo by Plamen Trifonov/NurPhoto via Getty Images)

Prince Konstantin-Assen Saxe-Coburg-Gotha and Princess Sofia Saxe-Coburg-Gotha on June 17th, 2017 in Vratsa region, Bulgaria for the Birthday of King Simeon II of Bulgaria. (Photo by Plamen Trifonov/NurPhoto via Getty Images)