vogue

In “The September Issue,” R.J. Cutler’s new documentary about the behind-the-scenes workings of American Vogue magazine, the formidable editor-in-chief Anna Wintour lives up to her reputation as the frosty doyenne of the fashion industry — aka Nuclear Wintour — who inspired Meryl Streep’s imperious performance in the film version of “The Devil Wears Prada.”