The vest is crochet from bottom to armholes in one piece, then worked straight up. Measurements taken laying on flat surface. Note: When wearing the vest, the pattern will pull down, so the bust measurements will decrease, and the length will increase appr. 10-15%. The pattern also includes crochet charts. BASIC SKILLS NECESSARY chain, single crochet, double crochet Cluster Stitch GAUGE Yarn Gauge: Crochet: 14sc x 18rows = 4in/10cm 1 pat rep (12 sts) = 3", 8 rows in pat = 4" SIZING / FINISHED MEASUREMENTS S/M: Bust 37", Length 17" L/1X: Bust 46", Length 18" 2X/3X: Bust 55", Length 19"