One was black and had a feathery skirt made from several layers of gauze, cut in a triangular pattern along the bottom. Starting from the lowest point of the triangles and gradually decreasing as it moved upwards, it had copper beaded flowers.
The other one was simple, light orange and sheer, and a long skirt that didn't quite touch the ground.
I don't think that skirt and shirt would have been underdressed, but they would have been odd and slightly stodgy. Especially if I had worn the orange sash I had been thinking of. It would have seemed okay in a fantasy painting or a hippie group, but out of place at that particular party.