Princess Elizabeth (now Queen Elizabeth II, left) and her younger sister Princess Margaret Rose (1930 - 2002) study the Ministry of Agriculture's cropping chart while working in a new vegetable garden at Windsor Castle, 11th August 1943. They are taking part in the government's 'Dig For Victory' campaign. (Photo by Topical Press Agency/Hulton Archive/Getty Images)
Princess Elizabeth (now Queen Elizabeth II, right) and her younger sister Princess Margaret Rose (1930 - 2002) watching the flight of a carrier pigeon they have just released, 20th February 1943. The bird is carrying a message to Chief Guide Lady Olave Baden-Powell, on the occasion of her late husband's birthday. (Photo by Topical Press Agency/Hulton Archive/Getty Images)
Princess Elizabeth (now Queen Elizabeth II) driving an ambulance during her wartime service in the A.T.S. (Auxiliary Territorial Service), 10th April 1945. (Photo by Popperfoto via Getty Images/Getty Images)
British prime minister Winston Churchill (1874 - 1965) (centre) with Queen Elizabeth, King George VI (1895 - 1952), Princess Elizabeth (left) and Princess Margaret Rose (1930 - 2002) waving from the balcony of Buckingham Palace during VE Day celebrations. (Photo by Reg Speller/Getty Images)
