Why? Because she's reigned supreme in the fashion world for almost a quarter of a centuries editor in chief of Vogue magazine, dictating what the world wants to wear and buy, and making or breaking designers with the slightest nod or frown. Because her signature bob and oversized sunglasses transcend trendiness and serves, she told 60 minutes, as the perfect "armour". And because she inspired a book and movie (The Devil Wears Prada). Great film!