see more

LONDON, UNITED KINGDOM - FEBRUARY 24: The Queen Attending A Premiere Of The Film Absence Of Malice At The Odeon In Leicester Square. The Queen Is Wearing A Diamond Necklace That Was A Gift From King Khalid Of Saudi Arabia. (Photo by Tim Graham/Getty Images)

LONDON, UNITED KINGDOM - FEBRUARY 24:  The Queen Attending A Premiere Of The Film Absence Of Malice At The Odeon In Leicester Square. The Queen Is Wearing A Diamond Necklace That Was A Gift From King Khalid Of Saudi Arabia.  (Photo by Tim Graham/Getty Images)