Wippell makes a clergy shirt that fits me. Really well. The collar needs to go up a size, and the sleeves shorten a bit. But that's why they send Wippell reps who know things to measure us and sell us things. Actually, I wasn't looking to buy today - I was looking for Christmas. Which is another great thing about Wippell - Wippell Man put my measurements for that shirt into a gift registry, so that I can send my parents there for Christmas.
Yes, they're expensive. But they're expensive for a reason, which is something that doesn't seem to be true of some clergy outfitters. And while I'll mostly still convert my own blouses, I expect, I also want a couple of really nice official black clergy shirts that look really good and fit really well. Really. And, as Wippell Man pointed out to me, they'll be happy to make me as many as I want. (Which, right now, is probably one.)