This is my first York. It is made out of cotton lawn. I cut a size 0 and followed all of the intructions. It worked out to be a little tight in the shoulders, and the bust darts look super weird (because I have no bust).
It's hard to see the bust darts in this photo, so they are probably not a big deal, but when I look down they look really strange.
York 2 is also made from cotton lawn. I cut a size zero, did not put the bust darts in and sewed it with a 3/8" seam allowance.