Reference: 

Model Kris try on SIZE M, height 5'8", weight 127lbs, bust 33.5 ins, hips 36.5 ins
Model Tina try on SIZE L, height 5'7", weight 155lbs, bust 36.5 ins, hips 38.5 ins

S:USA:4/6       Bust:38.5   Length:29.1   Sleeve Lenght:24.4

M:USA:8/10    Bust:40      Length:29.5   Sleeve Lenght:24.8

L:USA:12/14   Bust:41.7   Length:29.9   Sleeve Lenght:25.1

XLUSA:16/18  Bust:42.5   Length:30.3   Sleeve Lenght:25.5