Diana was a French ex-pat plucked out of New York society by Carmel Snow to write a fashion column in Harper's Bazaar, and before long she became the fashion editor. She did some of her best work there, I mean absolutely incredible stuff. (Follow the link for evidence!) Eventually she made the move to American Vogue in 1962, and she discovered Edie Sedgwick while there. So top that, Anna!
Above all, Diana is my kind of woman because she was never afraid to assert herself. She believed in her vision, and she didn't care if other people agreed or disagreed with her. No matter what facet of the fashion industry you find yourself involved in, that sense of confidence and direction is so imperative. It's what separates an assistant designer from someone who helms a heritage brand. It separates Taylor Tomasi Hill from the all of the accessory editors you've never heard of.
“I think part of my success as an editor came from never worrying about a fact, a cause, an atmosphere. It was me—projecting to the public. That was my job. I think I always had a perfectly clear view of what was possible for the public. Give ‘em what they never knew they wanted.”