The Palmer Pletsch Complete Guide to Fitting: Sew Great Clothes for Every Body. Fit Any Fashion Pattern (Sewing for Real People series)

Making patterns and fitting are 2 halves of the same coin. I worked as a apparel technical designer and pattern maker for about 8 years now and I can say this: book Really helped me out in filling the gap of maybe like 75-85% of fit issues I see within my line of work. Also helps me out when I make things for fun.