Seems to me that the "dressing for etiquette" issue has been thoroughly dealt with now. Just my opinion.
Ditto. It is impossible to describe a single clothing style that applies to all workplaces. A law firm's senior partner's executive assistant is in a different environment than a night-club bartender.
May I suggest instead: "Dress according to the explicit dress code of your workplace, and if there is none, use common sense in following the prevailing standards of that profession. Should you rebel against those standards, do not make others uncomfortable in your rebellion, and do not be surprised should disciplinary actions result."
I consider it disingenuous when people with tattoos, piercings, etc., act surprised that some people in some workplaces might disapprove of, or even be physically revolted by, body modifications. And I speak as one with multiple tattoos and piercings, which I keep covered at work. (I haven't seen that attitude here, but I've come across it IRL.)
OTOH, it can be great fun to dress ultra-conservatively in a let-it-all-hang-out milieu. I loved wearing my work suit to a meeting of what can be safely described as a group with nontraditional interests. And I was the only person at a Dead Can Dance concert wearing a fuzzy pink cowl-neck angora sweater. I told my date I was the only true rebel there...