Light painting is interesting. And this is the result of putting lots of light on models. They aren't actually wearing any clothes for that matter. Atton Conrad, an advertising and art photographer used light painting to dress his models here.
The result? Sheer beauty. Fashionable light! He used a remote trigger to snap the shot while he exquisitely painted around the model in his studio to create a glowing dress effect. Check out another shot of it below: