Unlimited Wardrobe: Played mostly straight – the flexibility is not unlimited, after all – by smart clothing, which can offer a variety of style modifications (via inbuilt MEMS), color changes, and other self-reshaping properties on the fly.  (And, of course, at home there are cornucopia machines.)  Played entirely straight by virtual clothing (which consists of an AR projection over a neutral gray jumpsuit or spraysuit, so long as onlookers are subscribing to the public v-tag channel and your coding budget is adequate.