Bust: The measurement is taken at the most protruding point of the chest. The centimeter tape should run strictly horizontally along the most protruding points of the chest, and should not tighten it.
Waist: This is the narrowest part of the waist. Place the tape from side to side directly at the waistline.
Hip: Place the tape approximately 7–9 inches below the natural waistline and measure from side to side at the hip line.
Underbust: Pull the measuring tape around your ribcage, just underneath your breasts. Make sure the tape is running straight and level around your body. This is your underbust measurement.