If there's one thing that no one doubts about Anna Wintour, the editor-in-chief of American Vogue, it is her power. Put simply, what she says goes. If you're an upcoming designer she's the one person you need in your corner. She's also an expert fashion ‘matchmaker', with a legendary skill for pairing designers with top fashion houses. With her trademark helmet bob and dark glasses she's a firm fixture in the front row at all the most glamorous catwalk shows. No one messes with Anna, she didn't get the nickname ‘Nuclear Wintour' for nothing.