Test-measure

Bust
Place the tape measure around the fullest part of your bust and measure evenly all the way around your back. Make sure the tape measure is not too tight and restricting your body.

Natural waist
Place the tape measure at the narrowest point between your rib cage and hip, and measure around your waist.

Hips
Place the tape measure over the fullest part of your hips, evenly around the middle.