Grade between two Louizon sizes

June 18, 2025

It's quite common to find yourself between sizes when looking at a measurement chart. Here, I'll show you how to quickly size down the Louizon model.

1. I have a very slim waist

Looking at the measurement chart, I realize that I have a waist size of, for example, a 36 while at the hips I am a 38.

In the diagram below I show you how to quickly grade between the two sizes. You will trace the back and front crotches as indicated by the red lines. You will then cut the bottom of the legs in the larger size, until the red line appears to recover the smaller size at the top.

2. I don't have a big difference in measurements between my waist and hips.

You have a more H-shaped body shape. For example, you should be a size 38 at the waist, while at the hips you are more of a size 36.

In the diagram below I show you how to grade at the forks between these two sizes. You will cut the lower part in the smaller size and then come and recover the larger sizes using the red lines.

You also have the option for this pattern to use another method. For this, you will take the size you need at the level of your entire waist measurement. You will cut the pattern in two by drawing a line parallel to the straight grain passing through the mid-leg notch. Perpendicular to this, you will measure the half-girth of the large hip (the green arrow indicates the area). From this measurement, you will subtract 2cm which corresponds to the seam allowances.

By multiplying it by two you will get the finished hip measurement of the product. By keeping some ease (2cm for a very close-fitting result and 4cm for a less fitted result), you will determine whether you need to remove 2cm or 4cm for example.

Once you have this measurement, you will divide it in half because we will be working on half a leg.

At the level of the large hips and on either side of your line that cuts the leg in two, you will distribute this value. You will trace two straight lines starting from the waist and passing through these marks and you will extend them to the bottom of the leg. You will only have to close your pattern to remove the excess.