Finished chest measurements:
0 - 6 months: 18½“ (47 cm)
6 months - 2 years: 20¼” - 22¾“ (51.5 cm -58 cm)
2 - 3 years: 24½” (62 cm)
4 - 7 years: 27-28½“ (68.5 - 72.5 cm)