STOCKHOLM, SWEDEN - APRIL 30: Prince Oscar of Sweden, Crown Princess Victoria of Sweden, Princess Madeleine of Sweden, Princess Estelle of Sweden, Prince Daniel of Sweden attend the choral tribute and cortege during the celebrations of the 70th birthday of King Carl Gustaf of Sweden on April 30, 2016 in Stockholm, Sweden. (Photo by Samir Hussein/WireImage)

STOCKHOLM, SWEDEN - APRIL 30:  Prince Oscar of Sweden, Crown Princess Victoria of Sweden, Princess Madeleine of Sweden, Princess Estelle of Sweden, Prince Daniel of Sweden attend the choral tribute and cortege during the celebrations of the 70th birthday of King Carl Gustaf of Sweden on April 30, 2016 in Stockholm, Sweden.  (Photo by Samir Hussein/WireImage)