Hip measurement when buying trousers and underwear

Short answer: The hip measurement is the most important number when you buy trousers and underwear, because both sit around the hips and thighs. Measure around the widest point and compare with the size guide for that style. Here is a simple method and advice if you fall between two sizes.

Why the hip measurement matters

Trousers and underwear have to fit around the hips and thighs, where the body is usually widest. That is why the hip measurement says more than a common size like 10 or medium, which varies from brand to brand. If you know your own number, you can compare with the guide and avoid guessing.

How to measure your hips

Stand with your feet together and place a soft tape measure around the widest point over the seat. The tape should lie level all the way round and touch the body without pressing. Measure over thin clothing or underwear, and read the number in centimetres after you breathe out.

Hip and waist belong together

Measure the waist at the narrowest point too, so you know both numbers. See the range under bamboo clothing for women and compare both measurements with the guide. If the hips fit one size and the waist another, choose by the measurement that is hardest to make room for.

Trousers, where the hips decide the fit

For trousers, the hip measurement decides whether you can get them over the hips and wear them all day without them feeling tight. If the waist is loose but the hips are snug, choose by the hips and adjust the waist if needed. It is rare to make the hips bigger, so they should be your starting point.

Underwear and the hip measurement

Underwear sits close and needs enough fabric around the hips and thighs so the edge does not cut in. If your hip measurement sits right on the border, think about whether you like a close or a loose fit. A size that is too small cuts in, and one that is too big folds under your trousers.

Stretch gives a little, but not everything

Stretch fabric gives and adapts to the body, but it cannot make up for a size that is too small. If trousers are stiff, give them a little extra room. If they are elastic, you can choose closer to your measurement. Always read the description, so you know how much the fabric gives.

Measure again if your body changes

Your body changes over time, and a measurement from years ago does not always fit today. If you have gained or lost weight, measure again before you order. It takes a few minutes, and you avoid sending things back because they do not fit.

When the size still does not fit

Even with the right measurement, cut and body shape can mean a style does not fit perfectly. Try another style or size instead of giving up. If clothing causes pain or skin problems, whatever the size, talk to your doctor. See also bamboo tops for women and the range for women.

Frequently asked questions

How do I measure my hips when buying trousers

Place a soft tape measure level around the widest point over the seat without pressing, and measure over thin clothing. Compare the number in centimetres with the size guide for the trousers.

Should I choose by hips or waist

Choose by the measurement that is hardest to make room for, often the hips. A loose waist is easier to adjust than snug hips, so the hip measurement is often the best starting point.

Does the hip measurement apply to underwear too

Yes, underwear sits around the hips and thighs, so the hip measurement matters. If you fall between two sizes, choose by whether you like it close or loose, and check the guide for the style.