I am tall and fat, and have been buying mens sizes since I was tall and skinny. What you might not realize about how women are ripped off when buying clothes is that compared to men's clothes, women's are shorter and smaller. Rumor has it that is for fit, but since I have had trouble with fit since I was a bony teenager I'm not buying it.

So in your position, I would find out the body and sleeve length of each size, and make my decision from there. Oh yeah, and for busty women, measure yourself around the largest part of your bust with a bra on, and consider that measurement. Hope this helps.