In pictures: Queen Elizabeth II through the decades

On Wednesday 9 September 2015, Queen Elizabeth II becomes the longest-reigning monarch in British history. To mark this momentous anniversary, we look back at the Queen's life and reign through the decades...

Princess Elizabeth and Prince Philip take part in a dance held in their honour in Ottawa, during their Canadian tour, on 17 October 1951. (Photo by Keystone/Hulton Archive/Getty Images)

This article was first published in the January 2016 issue of BBC History Magazine 

Elizabeth’s father, King George VI (right), and her mother, Queen Elizabeth, with Queen Mary (centre), Princesses Elizabeth (left) and Margaret Rose on the balcony of Buckingham Palace after the king and queen’s coronation ceremony on 12 May 1937. (Photo by Fox Photos/Getty Images)

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