To fit bust measurement:

Extra-Small/Small
28-34 ins (71-86.5 cm)

Medium
36-38 ins (91.5-96.5 cm)

Large
40-42 ins (101.5-106.5 cm)

Extra-Large
44-46 ins (112-117 cm)

2/3 Extra-Large
48-54 ins (122-137 cm)

4/5 Extra-Large
56-62 ins (142-157.5 cm)