To measure your waist and hip accurately, stand up straight and use a soft measuring tape. Place the tape around the narrowest part of your waist, usually just above your belly button. For your hips, measure the widest part of your hips and buttocks. Make sure the tape is level and snug but not too tight. Avoid measuring over clothing as this can affect the accuracy of your measurements. Repeat the process a few times to ensure consistency and accuracy.