Armhole: Place measuring tape at highest point of shoulder and drop it backwards. Bring the tape up under your armpit leaving about 2 fingers worth of space in your armpit. Then pull up the tape to the shoulder where you started.
Upper Chest: Bring the measuring tape around your back and under your arms to the front of your body. Have the tape rest about 3 fingers down from your armpit and 5 fingers down from your clavicle. Take a deep breath and expand your chest.
Bust: Stand up straight, bring the measuring tape around your back, under your arms and across the fullest part of your bust. Pull the tape together as much as you can without changing the shape of your chest.
Waist: Wrap the tape across your back and around your torso at the smallest part of your natural waist. It should line up with your belly button. Pull it together until it's comfortably flat against your body.
Hip: Hold the tape at the fullest part of your hip and wrap around the fullest part of your butt until it's flat against your body.
Rise: Place the measuring tape in the center of your crotch and pull it up to your stomach. The measurement given will show how the pants will fit whether its high-rise, mid-rise, low-rise, etc.
Inseam: Place the measuring tape at the center of your crotch and run it down the inside of your leg.