Just to add some thought to this argument. How do you guys feel about women being allowed to walk through the streets of major US cities topless? Before you answer, keep in mind that many of the topless women will be of the old out of shape category. Would you be for that? Telling women they have to cover their hair, or their breasts both seem somewhat ridiculous to me. Though I'm sure there are a lot of right wingers who hate hijabs that would also be offended if grandmothers started walking through the park topless.
IMHO, most cultural norms based on sexuality are stupid, the hijab included. If you want to wear it knock yourself out. If someone is forcing you to wear it, that's a whole 'nother issue.
Duh, I don't believe there's a law that says a woman cannot wear a hijab in public. There are, however, local laws in the United States governing public nudity. Now, in certain African and Asian countries, it is permissible for tribal women to go topless (both the young and old "ones" :rotfl

For me, having a woman go topless on the flight actually wouldn't phase me too much after awhile. . .in conversation, I'd still make "eye to eye" contact given the "normalcy" a topless woman would have after a couple of minutes. :bandit:
I think what ILSstud attempted to convey was there MIGHT be a possibility she had no choice in what she wore on the flight deck (cockpit

. . .but you're right, "TELLING" women what attire to wear is rather antiquated. . . which differs from saying what is "appropriate" or not.
PS - I can't believe I said all that with a straight face!