LONDON, UNITED KINGDOM - JUNE 02:  Looking Happy And Radiant Queen Elizabeth II Waving Outside St. Paul's Cathedral On The Day Of The Service To Mark Her Golden Jubilee - The 50th Anniversary Of Her Reign.  The Three-strand Pearl Necklace Is Worn For All Important Occasions And Was A Gift From Her Father King George Vi.  The Queen Is Wearing It With A Diamond Brooch - One Of The Family Heirlooms.  (Photo by Tim Graham Photo Library via Getty Images)