Super-easy and quick project.
You only need 50 cm (20") of fabric (jersey, fleece or soft cotton) per 1.40 m (55") of height or, as I did, you can give new life to a knitted jumper, a gauzy sweatshirt or a long-sleeved T-shirt that you no longer wear.
Also prepare 50 cm (20") of 1 cm (0.4") high elastic (for the legs) and 50 cm (20") of 2 cm (0.8") high elastic (for the waist).
In the file you will find the lines for 5 baby sizes, from a length of 62 cm (24.4") to 86 cm (33.9"). The shorts fit very comfortably on the bottom to hold the nappy (perfect if you use the washable ones which are a bit bulkier!) and come down to the ankle so are ideal for mid-season or summer.
Cut out the pattern to the size you want and cut it out on the fabric, leaving 1.5 cm (0.6") for the seam allowances, 4 cm (1.6") for the top edge and 3 cm (1.2") for the hem.
1. Close the side seams with pins, right sides together, and sew.
2. Finish with a zigzag stitch.
3. Iron the edges towards the back of the trousers and secure them with a topstitching seam.
4. Close the inner leg seams with pins and sew.
5. Make a topstitching seam flush with the seams.
6. Thread the two legs into each other, right sides together and pin along the centre front and back seam.
8. Finish with a zigzag stitch and topstitch.
9. Turn the top edge inwards and sew it by folding it over to create the elastic loop. Leave an opening in the back of the trousers.
10. Thread on the 2 cm high elastic and adjust as required and close the opening.
11. Repeat for the leg hems with 1 cm elastic.
In order to make use of all the parts of the jumper, I also reused the cuffs and the lower edge of the jumper to create a knitted edge at the waist and ankles, into which I nevertheless passed the elastic.