STOCKHOLM, SWEDEN - APRIL 30: King Juan Carlos of Spain and Queen Sofia of Spain arrive at the Royal Palace to attend Te Deum Thanksgiving Service to celebrate the 70th birthday of King Carl Gustaf of Sweden on April 30, 2016 in Stockholm, Sweden. (Photo by Luca Teuchmann/Luca Teuchmann / WireImage)

STOCKHOLM, SWEDEN - APRIL 30:  King Juan Carlos of Spain and Queen Sofia of Spain arrive at the Royal Palace to attend Te Deum Thanksgiving Service to celebrate the 70th birthday of King Carl Gustaf of Sweden on April 30, 2016 in Stockholm, Sweden.  (Photo by Luca Teuchmann/Luca Teuchmann / WireImage)