King Carl Gustaf's sixtieth birthday gala dinner at the Royal Palace of Stockholm in Stockholm, Sweden on April 30, 2006. [Getty Images]

SWEDEN - APRIL 30: Tiara of Queen Silvia of Sweden in Stockholm, Sweden on April 30, 2006. (Photo by Alain BENAINOUS/Gamma-Rapho via Getty Images) — see more

SWEDEN - APRIL 30: Tiara of Queen Silvia of Sweden in Stockholm, Sweden on April 30, 2006. (Photo by Alain BENAINOUS/Gamma-Rapho via Getty Images)

Gamma-Rapho Alain BENAINOUS