Now I'm playing with the simulation settings for the collar to see what looks best. Here I made to top (folded over) part of the collar as stiff as it goes, while leaving everything else at Poser's defaults. That's definitely looking much better than making the bottom part of the collar also really stiff. But I guess a bit more stability might not hurt. Maybe I'll just hem it and see how that works. I think I'll have to hem the folded over part, as well, just to give it some visual thickness. Incidentally, I'm not sure whether to call this a blouse or a shirt. It does have a shirt-like collar but is very fitted and does not have a yoke or a collar button (at least not yet, who knows).

-- I'm not mad at you, just Westphalian.