Knickers in the right size without guessing

Short answer: You find the right knicker size by measuring your hips and waist and comparing with the size guide, not by guessing from your trousers. Compare with a pair that fits well today too. If they sit without cutting in or rolling down, the size is probably right.

Measure instead of guessing

Knickers in the right size start with a measurement, not a guess. The size of your trousers or dresses does not always tell you what to choose, because brands measure differently. Use a tape measure and write the numbers down, so you can compare them with the size guide every time.

How to measure hips and waist

Measure the waist at its narrowest and the hips at their widest, with the tape lying flat and close but not pressing. Stand relaxed and do not pull your stomach in. Write both figures down in centimetres. Many size guides use hips as the main measurement, but always check what the guide for your model states.

Bamboo knickers and the size guide

Bamboo in clothing is viscose from bamboo, and the fabric gives a little, but not enough to replace the right size. Look at bamboo knickers and compare your measurements with the guide for each model. Note which size suits you, so you do not have to measure from scratch every time.

Compare with a pair you know

If you have a pair that fits well, lay it flat, measure the width of the waistband and see how high it sits. Compare with the measurements in the guide for the new model. That way you can tell whether to choose the same size or a different one, without guessing.

Signs they are too small

Knickers that are too small leave marks at the waistband and legs, pull at the fabric and can creep upwards as you walk. You may also feel them tighten when you sit. If so, go up a size. The fabric does not always get softer with time, so do not wait for it to sort itself out.

Signs they are too big

Knickers that are too big slip down, gather in folds and can bunch up under your clothes. The waistband does not hold and the legs hang. Then try a smaller size. If they sit closely enough to stay in place without squeezing, the size is probably right.

Between two sizes

If you fall between two sizes, think about whether you want a close or a loose fit. If the cut is high and covering, the larger may feel better, and if it is low and small, the smaller may suit. Try both if you can, and pick the one that is more comfortable when you walk and sit.

Washing and the rest of your underwear

Wash the knickers according to the care label so they keep their shape and the size keeps fitting. Use the same approach for the rest of your underwear. Look at bamboo underwear for women and bamboo tops for women, and measure yourself before you choose.

Frequently asked questions

What should I measure to find my knicker size

Measure your waist and hips with a soft tape measure and compare with the size guide for the specific model. Many guides use hips as the main measurement.

Should I choose by trouser or dress size

No, those sizes vary from brand to brand and are a poor starting point. Use your own measurements and the size guide.

What do I do if I am between two sizes

Think about whether you want a close or a loose fit, and try both if you can. Choose the one that is more comfortable when you walk and sit.