How to choose the right size of pants without making a mistake



Too tight, too wide, too short, or too long: finding the perfect pair of pants can often be a challenge. However, well-chosen pants are a source of style and confidence . The right size isn't just a number: it depends on your measurements, the cut, the material, and even the brand.

Here is a precise guide to learn how to choose the right size of pants, without errors or approximations.

1. Take your measurements correctly

The first step is the simplest, but also the most overlooked: taking your measurements.

  • Waist : Measure at the smallest point, usually above the belly button.

  • Hip measurement : Place the tape measure at the widest point.

  • Inseam length : Measure from the inside of the thigh to the ankle.

  • Desired waist height : high, mid or low waist.

These three numbers are your universal benchmarks.

2. Understanding cuts and their effects

The size of a pair of pants does not have the same effect depending on its cut.

  • Slim / skinny : close to the body, requires millimeter precision.

  • Straight : classic cut, tolerates slight variation in size.

  • Large / palazzo : requires a waist adjusted to the belt, the rest is deliberately fluid.

  • Bootcut / flare : mainly adjusts the length, so that the bottom falls perfectly.

  • Cargo or jogging : more flexible waist thanks to the elastic or drawstring.

Tip: Always try on pants two sizes closer to yours, as the fit can change perception.

3. Materials that influence fit

  • Raw denim : not very stretchy, choose the correct size.

  • Stretch denim : may relax after a few hours, choose a half size down.

  • Wool/flannel : structured drape, classic fit.

  • Rigid cotton : be careful, no elasticity.

  • Synthetics with elastane : more comfortable, but risk of deformation.

Tip: A slightly fitted trouser in the cabin can become perfect after a few wears.

4. Differences between brands and countries

A French 38 is not always the same as an Italian 38 or an American 28.

  • France / Europe : sizes 34, 36, 38…

  • US : sizes expressed in inches (e.g. 28/30).

  • UK : close to EU but may run larger or smaller depending on the brand.

  • Italy : often smaller, order one size up.

Always check the brand's size guide before purchasing.

5. Fittings: points to check

When trying on pants, observe:

  • At the waist : should be fitted without marking or gaping.

  • At the hips : must follow the line without pulling.

  • At the crotch : no tension or unsightly creases.

  • Length : The hem should touch the top of the shoe.

Practical test: Sit down, walk, raise your arms. The pants should remain comfortable and in place.

6. Common mistakes to avoid

  • Buying pants without considering the material (e.g., stretch jeans that are too big become loose after 2 wears).

  • Thinking that a low waistline slims you down: on the contrary, it flattens your silhouette.

  • Ignore the length: pants that are too short break the line.

  • Neglecting alterations: A well-fitting pair of pants can become perfect after a hem or waistband repositioning.

Choosing the right pants size isn't about blindly following a number. It's about knowing how to read your body shape, understanding cuts, considering materials, and checking brand correlations.

A well-chosen pair of pants is more than just a piece of clothing: it's a foundation of style. It refines, structures, and gives confidence. By arming yourself with these guidelines, you'll no longer be dependent on chance or improvisation in the fitting room: you'll know exactly what suits you .



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