Why is Anna Wintour the most powerful figure in fashion?

As The Devil Wears Prada 2 opens in cinemas, the former editor-in-chief of Vogue Anna Wintour is back in the news – but who is she?The sequel to the 2006 film is widely perceived to be based on Ms Wintour's formidable and abrasive management style.However, the world of fashion and the magazines that follow it has changed a lot since then.So, has she maintained her grip and influence on the multibillion-dollar industry?Niall is joined by Paula Froelich, senior story producer and on-air contributor for NewsNation, to discuss her life and career.