The editor of American Vogue, Anna Wintour, is perhaps the fashion world’s most powerful player. She's also the subject of a new documentary, The September Issue, due for for release later this year. Closer to home, the editor of UK Vogue Alexander Shulman's criticisms of the fashion world's continued commitment to size zero is making the headlines. So how much power do fashion editors really possess? How much control do they have over what we buy, where we shop and what the retailers sell? Jenni is joined by the editor of Grazia, Jane Bruton, Lorna Perrin of French Connection and the editor of UK Vogue, Alexandra Shulman.