Today's DIY uses a leftover piece of upholstery fabric! A skirt that's quick to make, easy to sew (yes, even if you've never sewn before, even without a machine... with a little patience). 

This type of skirt, known as a quarter circle skirt, is made without pattern , using a calculation technique based on a simple formula (we promise, we won't take you back to math). 

👉Forthis DIY you need:

• approx. 140 x 140 cm of upholstery fabric (depending on the length you want and your waist size: feel free to test), here a very nice antique coupon on @leboncoin 
• sewing machine, pins, thread, iron
• tape measure, chalk and scissors
• grosgrain ribbon
• a sewing presser
• optional: a Japanese rule or flexible rule

👉How tomake :

1. First of all, the calculations. For those allergic - like us! - it's simpler than it looks, so let's go.

Measure your waistline, without pulling in your stomach, using a tape measure. 

Make a note of this measurement, and let's call it T. 

Here, we'll take T = 80cm waist circumference as an example.

We're going to calculate the radius (r) of your waist, and to do that, here's the magic formula: 

r = (T x 2) divided by ... π! And yes, an opportunity to use that little key on your calculator's keyboard! 

In our example, here is the result: 

r = (80x2) divided by π = 50.92cm

Add to this 10cm of crossing value (to cross your skirt), and 3cm of seam value. 

We therefore obtain r = 63.92cm.

In addition, here we would like a skirt height of 51 cm. 

Decide on the desired length and note this value, which we'll call H. Add a 2.5cm seam allowance. Here, H = 53.5cm.

1. Now that we've made all the necessary calculations, it's time to start marking the fabric.

A square piece of fabric is essential.

Take it inside out and fold it on the bias, i.e. diagonally. 

Start at the top of the formed triangle, then transfer the length "r" to the fabric, from one end to the other, to form a semicircle, which you then trace entirely with the Japanese ruler. 

From this line, draw the H measurement (skirt height + seam value). Trace the resulting semicircle. 

Cut along the two chalk lines. It's already starting to look like a skirt :-) 

1. Let's move on to sewing. 

Fold, press, pin and stitch the two hems on the sides of the skirt inwards, 1.5cm on each side.

Fold, press, pin and stitch the bottom of the skirt, making a 2.5cm hem.

Stitch tightly in a zigzag pattern all along the top of your future skirt, to prevent the fabric from fraying. 

If you like, and you're experienced at sewing, you can double the skirt. We prefer to leave it as is. 

Now trace and cut out the waistband. To do this, measure around the top of the skirt as it is, as shown in the video. Transfer this length + 3cm seam allowance. The height of the waistband is 10cm + 2cm seam allowance. 

In our example, we obtain a rectangle measuring 106cm x 12cm.

Cut out this rectangle, then zigzag stitch one of the lengths.

Fold and press the other length 2cm. Once this hem has been formed, fold the belt in half, wrong sides together, and iron the fold.

Sandwich your skirt between the folded part of the waistband and make the edges coincide, forming pretty angles.

Insert part of the ribbon into the belt and pin it in place. Stitch along the entire length of the belt to bring everything together. 

Try on your skirt, mark the point where you want the snap to hold the skirt. Sew the base of the snap, then put the skirt back on, cross it and note the point for the other part of the snap, sew it in. 

Close your skirt, and note where to sew the other part of your ribbon to close it. Hem the ribbon, pin it and stitch!

And ... TA-DA !!!