I'm in the process of authoring my own knitting pattern. I've made the sweater and have the pattern written down and now its time to adjust it for different sizes. Knitty's charts are helpful for Bust sizes, but I'm confused about the general length of the garment from neck to waist. I'm a size S and the piece is 22 1/2 inches from neck to waist. Any idea what that might be for M, L and XL?? Thanks for the help! I'll post the pattern once its ready...