All measurements in inches. 

These are the dimensions are when the garment is laying flat (before stretch). 

SIZE CHART XS S M L XL
LENGTH 45    46    47    48    49   
ACROSS SHOULDER 9 5/8 10 3/8 11 1/8 11 7/8 11 7/8
CHEST 12 1/4 13 1/4 14 1/4 15 1/4 15 1/4
NECK WIDTH 5 1/2 5 3/4 6    6 1/4 6 1/2
ARMHOLE DEPTH 8 1/2 9    9 1/2 10    10 1/2
WAIST WIDTH 12 1/4 13    13 3/4 14 1/2 15 1/4
BOTTOM OPENING 13 3/4 14 3/4 15 3/4 16 3/4 17 3/4