It was late spring, and Anna Wintour, the notoriously decisive editor of Vogue, was stymied. That is not a common state for her. But the presidential election had her in a bind, at least when it came to her December issue. She had to make a magazine in one reality and publish it in another. What to do?

Anna Wintour has chosen Marc Jacobs as the first guest editor in US Vogue’s history.

The fashion mogul turns 75 and shows no sign of loosening her grip on the fashion world. Here's a look at the magazine's contributions to the global fashion scene — and the controversies.