As humans, as innately social creatures, I think it's probably impossible to completely extricate one's self from the process of "maintaining solidarity with (a) group." Consequently, I think there can be a fine line between self expression and following the nuances of a particular group. There is often going to be a long tradition behind whatever method you choose to express yourself, whether you're aware of it or not. And it will affect your choices, because we don't live in a vacuum.

The discussion took an interesting turn in the journal to which I was originally responding. The true argument is more about behavior/moral development, rather than choice of appearance. It's just that your choice of appearance can often reflect your mode of behavior/stage of moral development.