The reason I'm posting this is that my body seems a bit unusual, because I've gone through a fair amount of trial and error to get a good fit around here.

I'm 5'10", am a D-cup, and would be a size 10 if things that size weren't usually too short for me. (I have to get guys' jeans mostly.) If two or all of these characteristics are true of you, most of the shirts shown in my stupid amount of photos indicate what the girly large size might look like on you. My profile page's first shirt list is of only that size. The second list points out which shirts are other sizes, if you want to check those out too.

Also if your body is sort of like this, when you want to buy a shirt and they're out of girly L's, please heed what I learned too late: a guys' S may fit you much better than a girly M. The sleeves are only slightly winglike; the other aspects of the fit are well worth it.