Wear a non-padded bra and use a soft tape measure. Hold the tape measure around your back at band level. Then bring it to the front, just above your bust. The resulting number is your band size. Hint: If the number is odd, round down to the closest even number.
Thread tape measure under arms, across shoulder blades at back and around fullest part of bust at front. Relax arms at sides while keeping tape parallel with floor. This is your bust measurement. Round up to nearest cm.
Bend to one side to find natural indentation in torso. This is your natural waist. Run tape around natural waistline, keeping tape parallel with floor and one finger between body and tape for a more comfortable fit.
Stand on a level surface with feet together. Measure around fullest part of hips and bottom (approximately 18cm – 23cm below waistline), keeping tape parallel with floor.
Stand with heels apart and measure around fullest part of thigh (approximately 3cm below crotch), keeping tape parallel with floor.