STOCKHOLM, SWEDEN - APRIL 30: Prince Oscar, Crown Princess Victoria, Queen Silvia, and Princess Estelle of Sweden watch a celebration of King Carl Gustav's 71st birthday from a window at the royal palace on April 30, 2017 in Stockholm, Sweden. (Photo by MICHAEL CAMPANELLA/WireImage)
STOCKHOLM, SWEDEN - APRIL 30: Queen Silvia, Crown Princess Victoria of Sweden, Prince Daniel Princess Estelle, Prince Oscar and Princess Sofia attend the birthday celebrations of the King at the Royal Palace on April 30, 2017 in Stockholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)
STOCKHOLM, SWEDEN - APRIL 30: King Carl XVI Gustaf of Sweden, Queen Silvia, Crown Princess Victoria of Sweden and Princess Estelle attend the birthday celebrations of the King at the Royal Palace on April 30, 2017 in Stockholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)
STOCKHOLM, SWEDEN - APRIL 30: King Carl Gustaf and Queen Silvia attend the birthday celebrations of the King at the Royal Palace on April 30, 2017 in Stockholm, Sweden. (Photo by Patrick van Katwijk/Getty Images)
STOCKHOLM, SWEDEN - APRIL 30: Princess Estelle of Sweden, Crown Princess Victoria of Sweden and Queen Silvia of Sweden during a celebration of King Carl Gustav's 71st birthday at the Royal Palace on April 30, 2017 in Stockholm, Sweden. (Photo by Michael Campanella/Getty Images)
