“The Devil Wears Prada,” Lauren Weisberger’s 2003 novel, was born out of an earlier media age when the New York magazine was a midtown dream of power, cachet and free-flowing expense reports. Weisberger, who had worked as a personal assistant to Vogue editor Anna Wintour, famously based her Runway magazine editor-in-chief Miranda Priestly (Streep) on her former boss.

