Bust – Measure around the fullest part of your bust, without tightening the tape. Take the measurement after exhaling.
Waist – Measure around the narrowest part of your torso. If you’re unsure where that is, lean slightly to one side — the natural crease that forms is where you should measure.
Hips – Measure around the fullest part of your hips.
TIPS:
When measuring circumferences, make sure the tape stays horizontal and doesn’t curve or twist.
Ask someone to help you or use a mirror for more accuracy.