Many years ago, when I used to teach college freshmen, I would tell them (frequently) that a simple word used correctly is worth more than an entire thesaurus of long and complicated ones. I cannot image why that particular piece of advice keeps coming back to me today.
Trixie – you can wear things that aren’t functional as long as you mix sartorial styles in such a way as to create a pleasing aesthetic for your professional milieu that is representative of an appropriate design scheme. But it should not be derivative, because that inadequately reflects your own personal prereogatives.
Or, you know, wear something that keeps you warm.