Pant Length (also refered to as Inseam) - measure a pair of pants that fits well from the crotch following the inside seam to the pant hem.

Womens Bust & Hip - Use a tape measure to measure at the fullest part of the bust for bust measurement, the narrowest point of the waist for waist measurement, and the fullest part of the hip (usually 9 inches from waist) for the hip measurement. Take these measurements while wearing your usual undergarments.

Mens Chest - With your arms straight out from your sides, measure the fullest part of your chest all the way around, just under your arms.