There is no specific size advice for this item - just order your usual size.
Actual Garment Measurements
Size
XS
S
M
L
XL
2XL
3XL
4XL
Full Chest
35
38
41
44
48
52
56
60
Body Length
27
28
29
30
31
32
33
34
Chest - Measured one inch below armhole.
Body Length - Lay garment flat (face down). Measure from center back neckline seam straight down to bottom of the front hem.