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Queen Elizabeth II leaves Schloss Augustusburg in Bruhl, Germany, after attending a State Reception, May 1965. She is wearing the Jubilee Necklace and a diamond bow brooch with pearl drop inherited from Queen Mary. Fox Photos/Hulton Archive/Getty Images

Even before her ascension to the throne, all eyes were on Princess Elizabeth, who would, of course, become Queen Elizabeth II — the longest-reigning British monarch. Here, see her life in photos, from her birth in 1926 to her marriage to Prince Philip in 1947, her coronation in 1953, the births of her children (and grandchildren and great-grandchildren!) and her Diamond Jubilee in 2012.