Wintour announced that Vogue will hire a US head of editorial content. People coming into a high-profile roles need to be strategic, experts said.

Anna Wintour was known as 'Nuclear Winter' during her time at British Vogue, according to the publisher of Gloss Magazine.

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."