Waist: Place a fabric tape measure around the waist at the belly button and measure 3 times for accuracy.
Pants or skirt length: Place a fabric tape measure at the waist and measure to where you want the hem to end. Measure 3 times for accuracy.
Inseam: Place a fabric tape measure at the crotch and measure to the ankle. Measure 3 times for accuracy.
Chest: Place a fabric tape measure around the thickest part of the chest and measure 3 times for accuracy.