It depends on where you live. In Seattle, for example, this is expressly legal just about everywhere in the city and is evidently exercised in practice. Intere

It depends on where you live. In Seattle, for example, this is expressly legal just about everywhere in the city and is evidently exercised in practice. Interestingly, this instance stems from a court ruling several decades ago that a government requirement to wear any particular article of clothing in public spaces was a violation of First Amendment rights. While the original case was about the right to be topless in public spaces, the generalized implication was that the government couldn't require you to wear anything at all.