I made these vests for my hubby, who is a dress up sort of guy. The vest is fully lined and the side pockets are just welts, not functional. Tailored the fit a little bit, but I think the pattern was pretty true to size, and not too complicated. Be sure to wash your lining fabric before you sew with it! Also, sew in interfacing tends to lie and wear better than fusible. Just my preference.
Pattern: New Look 6659
Fabric: Wool suiting and lining fabric