1. NECK

Find a shirt with a collar that fits well. Unbutton the shirt and lay it flat button side up. Measure from the center of the collar button to the far end of the buttonhole. To measure neck instead of a shirt, place tape measure around neck with two fingers inside tape measure for comfortable fit.

2. SLEEVE

With arm relaxed at side and slightly bent, measure from the center of the back of your neck down the outside of the arm to the wrist.

3. CHEST

Measure around your upper body just under arms, across shoulder blades while holding tape measure firm and level.