Here are some instructions on taking your bodies' measurements. If you have a garment(s) that fits perfectly,in each of these areas, measuring the garment rather than your body can be a great substitute!
Chest: Place one end of the tape measure at the fullest part of your bust, wrap it around (under your armpits, and back to the front) to get the measurement.
Waist: Use the measuring tape to circle your waist (sort of like a belt would) at your natural waistline, which is located above your belly button and below your rib cage. (If you bend to the side, the crease that forms is your natural waistline.) Don’t suck in your stomach, or you’ll get a false measurement. If you generally wear your clothes below your waist, take that measurement as well.
Hips: Start at one hip and wrap the tape measure around your rear, around the other hip, and back to where you started. Make sure the tape is over the largest part of your buttocks. Because making sure the tape is level back there can be hard, try to do it in front of a mirror.
Inseam: This is the distance from the uppermost inner part of your thigh to the bottom of your ankle. If you have a pair of pants that fit you perfectly (and they shouldn’t be too loose around the waist), measure the inseam of the pants, again from the crotch to the hem.
Thigh: Measure the fullest part of your thigh. Wrap the tape measure around your thigh from front to back You may be tempted to cheat by lowering the tape measure a few inches, but then you won’t get an accurate measurement.
Upper arm: Measure the circumference of your arm. Wrap the tape measure around the widest part of your upper arm from front to back and around to the start point.