To measure your body accurately, use a flexible measuring tape. For the hips, measure around the fullest part of your hips. For the waist, measure around the narrowest part of your waist. The pants length should be measured from the top of the waistband to the desired length, while the clothes length is measured from the highest point of the shoulder to the hem. The inseam is measured from the crotch to the bottom of the leg. Ensure that the measuring tape is snug but not tight for accurate results.