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LONDON - OCTOBER 13: Princess Alexandra of Kent arrives for an 80th birthday party for former Prime Minister Margaret Thatcher October 13, 2005 at the Mandarin Oriental Hotel in Knightsbridge, London, England. (Photo by Tim Graham/Getty Images)

LONDON -  OCTOBER 13:  Princess Alexandra of Kent arrives for an 80th birthday party for former Prime Minister Margaret Thatcher October 13, 2005 at the Mandarin Oriental Hotel in Knightsbridge, London, England.  (Photo by Tim Graham/Getty Images)