Have you seen the work of Synan O'Mahoney (accent on the 'Ma') for Celtic Woman? The best way is in video on YouTube, but there are plenty of Celtic Woman images here. I particularly love the informal "ceili dresses", intended to convey the spirit of a neighborhood party. The formal gowns they wear in the rest of the show are spectacular, but the ceili dresses are obviously made to be hugged, which gets the old male fantasies going (and makes me really wish I could learn to dance). Then there's Mairead Nesbitt, the fiddler, in her high-performance skirt. It's sheer, obviously to save weight, and split about eight ways. That's to prevent overheating and reduce drag. If you find that puzzling, you haven't seen the lady dance.