Disclaimer: This article is all about drafting patterns and choosing the right fabric but not about sewing the piece. If relevant, I’ll attach video instructions on how to do so at the end.
THE PLEATED TROUSERS
Today we’re going to learn how to draft a Pleated Trousers Pattern. I’ll show you how to draft it from scratch, so let’s get into it.
This design shows straight leg trousers with two front pleats, two visible side pockets, and a lowered curved waistband that is 4cm wide. They have a side opening that uses an invisible zipper to reduce the bulk at the front. This pattern might look more advanced, but I think it’s fairly easy to draft and to sew. Don’t get too scared with the images and just take it one step at a time. You can also find some video instructions at the bottom of the page. So, are you ready to learn how to draft a pleated trousers pattern?
DIFFICULTY
These are the main characteristics of this pattern:
- FOUNDATION: Trousers (instructions here)
- WAISTBAND: Low waist, Curved waistband, 4cm wide
- LEG-LINE: Straight from the hips to the hem
- DETAILS: Added ease at the waist in the form of gathers and invisible pockets on each side
This pattern should take you around 2h to draft and 6h to sew (both times assuming you are a beginner)
FABRIC
This pattern only needs three types of fabric, one for the main structure, one for the pocket lining and interfacing to add structure to the waistband.
- Main fabric length: 1.5 to 2m depending on the width of the fabric and the trouser length
- Lining fabric length: 0.5cm should be more than enough
- Interfacing: 0.5m should be more than enough
This design works best with flowy fabrics that drape well, here are the fabrics I used:
- Main fabric: Anything adding viscose or poliester. I used this fabric because it drapes really well
- Lining fabric: 100% cotton fabric in a medium weight (below 150g/m2 if possible)
- Interfacing: I use medium weight and add it to both sides of the waistband for extra support
PATTERN PIECES
| # | Name | Fabric Cut |
|---|---|---|
| 1 | Front | Cut 2 main |
| 2 | Back | Cut 2 main |
| 3 | Front Waist | Cut 2 main, 2 interfacing |
| 4 | Back Waist | Cut 2 main, 2 interfacing |
| 5 | Pocket top | Cut 2 main |
| 6 | Pocket bottom | Cut 2 main |
| 7 | Backing | Cut 2 main |
| 8 | Facing | Cut 2 main |
Drafting Instructions
STEP 1 - The Leglines
Step number one is to change the shape of the trousers leg-line. For this design I went for a straight leg-line but feel free to leave it tapered if that’s the look you’re looking for.
To create the straight leg-line, draw a perpendicular line from the side hip down to the hem, for both front and back pattern pieces.
STEP 2 - The Waistline
The next step is drawing the waistband.
- Before drawing the waistband, I lowered the waistline 3cm (grey area in the drawing)
- Mark your waistband, in this case 4cm (red area in the drawing)
- Separate the pieces from the front and back and put them together to get rid of the dart space
- Smooth the curves
This design has an invisible zipper on the side, so I’m going to have the front and back waistbands separate
STEP 3 - The Pockets
This design only has front side pockets
- The pocket opening is 4.5cm wide and 16.5cm deep
- The pocket is 30cm deep at the side and 10cm deep at centre front. Follow the shape in the picture
- For the facing, draw a parallel line to the pocket opening 3.75cm away from that line
The pocket has 4 pieces: the bottom lining, the top lining, the backing and the facing. It’s like a puzzle, look at the pictures to see which is which.
STEP 4 - The Pleats
This design has 2 pleats. First, let’s locate them:
- First pleat: On the crease line
- Second pleat: 4cm away from the crease line to the left. Draw a parallel line from the crease line until 17cm above the knee. Then, connect the end of that line to the left side of the knee
These are the lines where we’re going to add the pleat volume. To do that, cut through the lines all the way but not through the end. This is because we want to add volume to the top of the pattern and not to the bottom.
- The first pleat is 5cm wide
- The second pleat is 2.5cm wide. If your pattern has darts, just add the width of the darts as the pleat width
STEP 5 - The Seam Allowances
Once the main pattern is drafted, it’s time to add all the finishes:
- Add 1cm seal allowances everywhere except for the CF, CB of the waistbands and the hem of the trousers
- The waistbands are cut on the fold which means that no seam allowances are needed at CF and CB
- The hem of the trousers is 4cm but make it as wide as you want
And just like that, you learnt how to draft a pleated trousers pattern! I hope you found it easy to follow and if you have any questions, please leave a comment.
If you liked these instructions and are looking for more foundations and ways to modify them, you can check out my ebook on how to draft trousers.
There you have ALL the information you need to draft any trousers designs you’ve ever dreamed of.
The ebook breaks down a pattern into:
- The foundation: how to take measurements, draft them and fix any fitting issues
- The Waistline: Instructions on how to change the waistline and how to add waistbands
- The Length: I show you the modify the length to most typical ones
- The Leg-line: Learn how to create leg-line designs like slim, tapered, straight or flared
- The Details: Here you’ll find any design detail like yokes, pleats, turn ups, openings and many pocket designs
- The Finishes: Finally, learn how to finish up the pattern, add seam allowances, hems and all the important information
All in one place, check it out now!
If you need a more step by step tutorial plus sewing instructions, here you have a video explaining all that:


