Measure around your chest (but under the armpits!)
Measure the width of your chest from armpit to armpit.
Measure around the smallest part of your waistline with one finger space between your body and the measuring tape.
Stand with your heels together and measure around the fullest part of your hips. Keep the tape parallel with the floor.
Stand with your heels together, keeping tape straight and perpendicular to the floor. Measure from the high point of your shoulders down the length of your back.
Find a pair of pants that fit you well and measure from the crotch seam to the opening at the bottom of the pant leg. Round the number to the nearest 1/2" to get your inseam length.
The length of the sleeve from the shoulder seam to the cuff.
The flat width of the cuff.