Britain's Queen Elizabeth Marks 60 Years on Throne

Queen Elizabeth and the Duke of Edinburgh enter Parliament House, Wellington, New Zealand, January 12, 1954. The Queen wears her coronation gown, the order of the garter, and a diamond tiara. (AP)

A new portrait of Britain's Queen Elizabeth by artist Darren Baker is seen after being unveiled at Church House, in London September 20, 2011. (REUTERS)

Britain's Queen Elizabeth and Prince Philip wave as they board a plane to depart Australia after an 11-day visit, in Perth October 29, 2011. (REUTERS)

Queen Elizabeth receives a bouquet of flowers from Martha Campbell following a service at Westminster Abbey in London November 16, 2011. (REUTERS)

Britain's Queen Elizabeth (2nd L) with her husband Prince Philip (R), the Turkish President Abdullah Gul (L) and his wife Hayrunnisa in Buckingham Palace, London November 22, 2011. (REUTERS)

Britain's Queen Elizabeth meets the public during her visit to Preston, northern England, August. 5, 2002. (AP)

Britain's Queen Elizabeth lays a wreath during the annual Remembrance Sunday ceremony in London November 13, 2011. (REUTERS)

Britain's Queen Elizabeth visits the emergency call center for the victims of the Asian Tsunami disaster in north London, January 5, 2005. (AP)

Britain's Queen Elizabeth stands in the entrance of St Paul's Cathedral after arriving for a service of Thanksgiving to celebrate her Golden Jubilee, in London June 4, 2002. (AP)

President Ronald Reagan and Queen Elizabeth raise their glasses in a toast during a state dinner in San Francisco's Golden Gate Park, March 3, 1983. (AP)

Queen Elizabeth and Prince Philip look up from the balcony of Buckingham Palace in London as a Concorde flies past during the Golden Jubilee celebrations in London, June 4, 2002. (AP)

Britain's Queen Elizabeth leaves St. John's Anglican church after attending church service in Canberra, Australia, October 23, 2011. (REUTERS)

The King's Troop Royal Horse Artillery fires a forty-one gun salute in central London February 6, 2012, marking the sixtieth anniversary of the Queen's ascension to the throne. (REUTERS)

Britain's Queen Elizabeth on her Sandringham Estate in Norfolk, eastern England February 3, 2012. (REUTERS)