Darth Maul? Now that is interesting though I would not dare to wear like this myself, unless it was a theme party or if my Guru ask me to do so to cut away my ego...which I have witnessed students getting this training. That's a whole different story.
But yes I do agree a temple is not a beach club... it has it's guide lines just like any place of worship and should be respected not because you are bad, just in general not to disturb anyone's mind especially the Guru's.
Practitioners are of so many different levels that come to the teachings, instead of focusing on the teaching, they end up focusing on the clown dressed in whatever... not too good in this sense, though you can also argue to say well, it is their fault for not being able to focus, but then again you created that cause. So it takes two hands to clap kind of thing.
I have seen very beautiful girls wearing short skimpy clothes who came to the centre the first time, I mean u'd think "common sense" girl, this is a place of worship... but later over the years, their dressing changed and they are probably one of the best practitioners in the centre, more so then those stereotypical Ms.Daisies
I've also seen of many western Dharma centres that are very casual and liberal and does not focus so much on one's attire. And everyone seems to be okay with it. So if your Guru and centre is okay, then cool, but I would definitely say follow the temple/centre's guide lines on dress code, that is the safest for you and others. But please watch your mind and not judge others from the way they look.