May 10 May 10 Regal Review: King Harald & Queen Sonja's 80th birthdays - Opera House Gala Dinner Heaven Countess of Wessex, CP Marie Chantal, Crown Princess Mary, Crown Princess Mette-Mari, Crown Princess Victoria, GD Maria Teresa, Hereditary GD Stephanie, Princess Mabel, Princess Marie, Princess Martha Louise, Princess Sofia, Princess Tatiana, Queen Margrethe, Queen Maxima, Queen Silvia, Queen Sonja