Well, in dancing, as in srtpos like ice skating and tennis some leeway needs to be given in terms of attire appropriate for the sport. Ballroom dancing which I have participated in often requires some very gymnastic type moves dancing requires a certain degree of athleticism. So while I would not advocate dancing dresses for evening wear, etc they are proper for dancing. However, I do agree there have been some outrageously immodest costumes that step way beyond the boundaries of appropriate. I think Bristol should be able to show some skin as more material can really inhibit moving but it is possible to keep it within bounds. For example, old Hollywood stars like Ginger Rogers and Fred Astaire kept their dancing attire classy and, for the most part, modest. You CAN dance modestly and yet still appropriate to the type of sport.