"Marty himself has been something of a hipster template for a while now: the double denim, the checked shirt, the high-tops. If only Marty had arrived in east London 2014 as opposed to Hill Valley 1955 (and, later, 2015 and 1885), he would have fit right in and instantly sparked a sleeveless parka revival…. Lorraine Baines (later McFly, then Tannen) has, waist up, a proper Alexa Chung look going on, with her Peter Pan collars and demure little jumpers. Biff Tannen's sports jackets are definitely in style this season, for men and women, while George McFly's thick-rimmed glasses have been a fashion staple for absolute yonks now (ie about five years)."
—"Back to the Future fashion: this season's big trend" is the assertion, and Lord knows I am in no position to argue for or against its validity.