She's fashion's most powerful woman and was very possibly the inspiration behind Lauren Weisberger's The Devil Wears Prada. She is as famed for her sunglasses and razor-sharp bob as she is for her tenure at the helm of US Vogue – but how much do you really know about Anna Wintour? Ahead of her birthday on 3 November, we've compiled a list of the 11 dresses that make her a fashion icon (it was hard to narrow it down – trust) and accompanied 'em with facts bound to impress even the savviest of fash-fans.