I'm very boho and unique in my dress sense. Think vintage, artisan and folksie - and that's me! I'd also describe myself as way out with a 1960s influence.
I haven't read the thread, so sorry if I'm missing relevant replies. Just my view, but if you're into boho and being unique, surely that's a life attitude as well as what you wear? Which means not caring if someone else doesn't like what you're wearing. Free spirit - including not caring about other people's opinions on your dress sense/style.
Unless your office has a particular dress code? Then it's up to the manager/HR to decide if what an employee wears is appropriate.
The only other thing I can think of, is in one of my previous jobs a couple of colleagues would turn the office heating up so high the rest of us felt ill. Stuffy and lethargic. They would wear thin summer clothes in autumn and winter, then turn the heating up.
But if that's not what you're doing, and you're meeting the office dress code (if there is one), then who cares what one colleague thinks about your choice of outfit. Just ignore her, don't let it get to you, and focus on your work.
It's no big deal if somebody doesn't get your personal choice of outfit, nothing to get upset about. I personally couldn't care less if someone didn't like what I'm wearing. I never have (although have always respected specific office dress codes). Their problem, not mine.