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STOCKHOLM, SWEDEN - JULY 14: King Carl Gustaf of Sweden, Queen Silvia of Sweden, Crown Princess Victoria of Sweden, Prince Daniel of Sweden, Princess Estelle of Sweden and Prince Oscar of Sweden arrive for a thanksgiving service on the occasion of The Crown Princess Victoria of Sweden's 40th birthday celebrations at the Royal Palace on July 14, 2017 in Stockholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)

STOCKHOLM, SWEDEN - JULY 14: King Carl Gustaf of Sweden, Queen Silvia of Sweden, Crown Princess Victoria of Sweden, Prince Daniel of Sweden, Princess Estelle of Sweden and Prince Oscar of Sweden arrive for a thanksgiving service on the occasion of The Crown Princess Victoria of Sweden's 40th birthday celebrations at the Royal Palace on July 14, 2017 in Stockholm, Sweden.  (Photo by Patrick van Katwijk/Getty Images)