This is actually a topic my sister and I have discussed at length several times over the past couple of years, ever since Native American styles became super trendy. It can actually be a difficult issue, and I'm not quite sure where I stand on it yet. The point
Holdfast made, that there is a difference between appropriating another culture's dress and borrowing or adopting certain aspects of it, is a very important one, especially when it comes to the moral question the OP poses. It's also a difficult distinction to navigate.
I bought a very casual salwar kameez when I was in Mumbai, and I wear the top with jeans or leggings all the time. When I bought it, the (very sweet) shop owner warned me not to wear the pants alone, because that would be like wearing my underwear with nothing over it -- I never wear the pants, actually, because I feel uncomfortably like I'm playing mildly racist dress-up when I put on the whole outfit. I was in a Tibetan shop in the East Village today, where I bought a pair of pants. There were a bunch of beaded bracelets I toyed with for awhile -- some were Buddhist prayer beads, others had Sanskrit on them. I really liked them, but didn't buy -- I'd just feel awkward and wrong wearing them for the sake of fashion, when I'm an American and an atheist. Similarly, my friend is Catholic, and has a beaded bracelet with little portraits of saints on each bead which I've always admired, and which I kind of want to wear, but I probably never will. I have a silk top I bought in Chinatown a few years ago. My best friend, who is Korean, commented, "That looks beautiful on you! I could never wear a shirt like that, though, since I'm Asian." When I think about it rationally, this line I walk seems pretty arbitrary, and almost silly. Still, I feel compelled to walk it, and would feel uncomfortable if I stepped over it, perhaps because of how closely it relates to my own culture (well, part of my culture)...
There was recently a big stink when Urban Outfitters started selling "Navajo panties," and the Navaho Nation responded with a
lawsuit. In the past, I've never felt offended, or even given a second thought to a white woman wearing Native American earrings, or a black girl kicking around in moccasins. (I wear NA jewelry often, and I'm very aware of how white I am; other Indians can tell I'm Indian but to everyone else I suppose I just look like another white chick wearing trendy Native jewelry. My little sister makes Native American jewelry -- we are half Native American and she's so fair that she's whiter than most of the white women she sells to.) But in the past few years, as emaciated white chicks started parading down runways in neon warpaint, headbands, and massive feather dresses on their heads, I found my stomach churning at the sight of them. My roommate got an Urban Outfitters catalogue in which practically every other page had a very
not Lakota woman in some very Lakota headgear, and emotionally I felt much the same as I do when I see cheap "squaw" and "chief" costumes in the Halloween store -- that is, disgusted.
I guess in the end I'm on the fence...I don't know that any of it matters, but I know what I'm comfortable wearing, and what crosses that line.