Where Michelle Obama and Kendall Jenner tread in fashion, others follow. Should they both divert down the same path . . . well, that’s a recipe for a trend to sweep the nation. Such was the case in the fall of 2016, when both the First Lady and the First It Girl of Modeling sported chain-mail dresses. Mrs. Obama’s was a rosy, custom-made Atelier Versace gown that our own Michelle Ruiz called “a mic drop on eight years of fashion slayage.” Jenner’s dress was also custom, a sil