For the best fit, I recommend measuring your body with a soft, flexible measuring tape, and when possible have a friend help you. Using straight rulers & metal measuring tapes will result in inaccurate measurements and possibly a poor fitting experience.

Measuring against your body or wearing light clothing is best for taking measurements. Avoiding restrictive waistbands is recommended. Being relaxed will give you the most true-to-you measurements. Try a few deep breathes before recording the measurement.