This vest features wide ribs, which make it very elastic and form fitting without any special shaping. Don't want form fitting? - then make a larger size! BASIC SKILLS NECESSARY Knit, purl GAUGE Gauge 251/2 sts and 25 rows = 4 inches/10 cm in [k5, p5] rib with larger needles. When measuring gauge, dampen fabric and lay flat to dry. SIZING / FINISHED MEASUREMENTS Sizes xs [s, m, l, xl, 2xl] Finished size at Bust 30.5 [33.5, 37, 40, 43, 46] inches, 77 [85, 94, 102, 109, 117] cm.