Choosing Collars and Lapels
O/A shape – broader collars to balance hips
I, V shape or petite – narrower/smaller collars not to further broaden shoulders or overwhelm your frame
H, X, 8 shape – medium collars – higher will make you look taller, lower will draw attention to bust and make larger
Large bust – a higher wider collar can balance, but a high opening will cover up your bust (like any high neckline) and make your bust appear larger.