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BORGHOLM, SWEDEN - JULY 15: Queen Silvia of Sweden and King Carl Gustaf of Sweden are seen meeting the people gathered in front of Solliden Palace to celebrate the 40th birthday of Crown Princess Victoria of Sweden on July 15, 2017 in Borgholm, Sweden. (Photo by Andreas Rentz/Getty Images)

BORGHOLM, SWEDEN - JULY 15:  Queen Silvia of Sweden and King Carl Gustaf of Sweden are seen meeting the people gathered in front of Solliden Palace to celebrate the 40th birthday of Crown Princess Victoria of Sweden on July 15, 2017 in Borgholm, Sweden.  (Photo by Andreas Rentz/Getty Images)

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BORGHOLM, SWEDEN - JULY 15: King Carl Gustaf of Sweden and Queen Silvia of Sweden is seen meeting the people gathered in front of Solliden Palace to celebrate the 40th birthday of Crown Princess Victoria of Sweden on July 15, 2017 in Borgholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)

BORGHOLM, SWEDEN - JULY 15: King Carl Gustaf of Sweden and Queen Silvia of Sweden is seen meeting the people gathered in front of Solliden Palace to celebrate the 40th birthday of Crown Princess Victoria of Sweden on July 15, 2017 in Borgholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)

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BORGHOLM, SWEDEN - JULY 15: King Carl Gustaf of Sweden and Queen Silvia of Sweden is seen meeting the people gathered in front of Solliden Palace to celebrate the 40th birthday of Crown Princess Victoria of Sweden on July 15, 2017 in Borgholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)

BORGHOLM, SWEDEN - JULY 15: King Carl Gustaf of Sweden and Queen Silvia of Sweden is seen meeting the people gathered in front of Solliden Palace to celebrate the 40th birthday of Crown Princess Victoria of Sweden on July 15, 2017 in Borgholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)