This post was published more than a few years ago (on 2004-06-02) and may contain inaccurate technical information, outmoded thoughts, or cringe takes. Proceed at your own risk.
So, this is the traditional costume of These united States of America? I suppose it is vaguely reminiscent of certain Native American garb, but I think a little bit of "Vegas Showgirl" has crept in there as well.
Update
I'm now linking to the image directly. The original caption read:
Shandi Finnessey, Miss USA during her presentation with traditional costume, at the Miss Universe Pageant in Quito, Ecuador, Tuesday, May 25, 2004. (AP Photo/Dolores Ochoa)