Chest Size: With arms relaxed and at the sides, place tape measure around fullest part of the chest (usually just under the armpits), keeping the tape up under the arms and across the shoulder blades. The tape should be straight and level across back. Insert a finger between the tape and body to insure a comfortable fit. Measure while wearing an undershirt.

Blouse Length: Measure along the back, from the bottom of the neck to just below the crotch.

Sleeve Length: With the arms relaxed and at the sides, measure from the middle of the base of the neck, over the shoulder, and to the wrist.

Neck Size:Measured around the neck, at the middle of the neck, all the way around.

When in doubt, go larger.