Body Length: Length (HSP) is centre front length measured from highest point on the shoulders
(HSP) to the bottom hem.
Chest: With arms at sides, place tape measure under your arms and run it around the fullest part of the chest and across the shoulder blades.
Sleeve Length: With arm bent and hand on hip, place tape measure at the base (Centre Back/CB) of your neck and follow along the top shoulder and to the sleeve end.