LONDON, UNITED KINGDOM - JUNE 02: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Queen Elizabeth II (seen wearing a Harry Winston diamond necklace gifted to her by King Khalid of Saudi Arabia) is helped down the stairs by King Constantine II of Greece after attending his 70th birthday party at Crown Prince Pavlos of Greece's residence on June 2, 2010 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
