Form-Fitting Wardrobe: While it’s not all tight-fitting – many clothing styles are perfectly loose and flowing – just about all clothing in the Empire and other advanced civilizations fits perfectly.  That’s because it’s made to incorporate a whole passel of tiny MEMS, micromachines which ensure that it loosens and tightens and shortens and lengthens in all the right places to fit its wearer just that perfectly, no matter who they are or what they’re doing, as long as the size was approximately reasonable in the first place.  It also never gets caught on things or trails in mud, remains stable in wind and weather, and brushes dirt off itself.  It’s hard to avoid being stylish, really.

(This even applies to hardshell armor, but it tends to be modified to fit perfectly on manufacture, or on-the-fly with a handy nanolathe, rather than being self-adjusting.)