Dame Anna will be remembered for "the greater sense of informality that she brought to her early Vogue covers" and the tone they set, says Dr Kate Strasdin, senior lecturer at the Falmouth University's Fashion and Textile Institute. "She also pioneered the celebrity cover image, positioning popular culture beneath the famous Vogue banner."

Anna Wintour is stepping down as Vogue editor-in-chief but will retain editorial control over the storied magazine. The longtime Vogue powerhouse told staff Thursday she's seeking a head of editorial content to handle more of the day-to-day operations. Wintour will remain chief content officer for Condé Nast and global editorial director of Vogue.