So I bought a pair of jeans.
Not that I’m not keen to try making jeans (I have the Ash Jeans pattern and some lovely denim I bought in Japan) but I actually wanted jeans in technical denim for a month-long overseas trip.
I bought a pair of Vigilante’s amazing Scion Jeans. I already have one pair of Vigilante jeans purchased several years ago (which still look brand new!) so I knew I would be getting great quality. Why am I purchasing something I already have, you ask? Well, my old Vigilante’s are a wide leg jean which are super comfortable but I wanted a skinny pair. I went down a size as I knew they would be super-stretchy, and I was right.
They fit great in the hip, thigh, bum and crotch, but the waistband is toooooo stretchy. It’s not interfaced or reinforced in any way either, so while my legs were loving the skinny fit, the waist would be creeping downward, leading to inevitable, constant ‘waistband tug’ practiced by skinny jeans wearers worldwide.
Which is where my alternative jeans-waist-adjustment comes into play!
I have previously done some looking around the interwebs and there were a few tutorials for taking in the back waist seam, most of which involved a lot of unpicking of the waistband and centre back seam (which is usually a flat-felled seam, or the topstitched faux-flat-felled seam) followed by fitting and marking and pinning and re-sewing…. and they all seemed to gloss over how to deal with getting that original flat-fell seam to sit nicely in line with the new seam – in my mind’s eye, that looked difficult and time-consuming. And lumpy.
But I’ve got a different method. Minimal unpicking, only a little sewing, and an almost-invisible alteration!
Supplies:
- Sewing Machine
- Thread to match your jeans
- Topstitch thread (optional)
- Jeans needle (if your jeans aren’t too heavy, you can just use a Universal needle in a heavier weight like a size 14)
- Elastic (The width of your elastic will depend on the width of your waistband – it needs to fit between the topstitching on the waistband. I had some 2.5cm elastic that was perfect for this. The colour of the elastic doesn’t matter, either – you won’t be able to see it when you’re done!)
- Stitch ripper/unpicker
- Sharp scissors
- Chalk
- Measuring tape
- 2 safety pins
To start with, put your jeans on. Have a look at where the most bagginess is happening in the waistband. In the case of my jeans, it’s pretty much all the way around. You might decide you only need to adjust a little at the back waist, or just from the side seams. (Folks, it’s reeeeally hard to take photos of black jeans while holding your waistband with one hand….!) I had already unpicked one of my belt loops when I realised I needed more ‘before’ photos – that’s why it’s sticking out in this photo!
Have a look at where your belt loops are. You’ll be running your elastic from one belt loop position to another, so you can hide the elastic insertion points under the belt loops. Pick which belt loops you are going to use, then unpick the stitches holding the TOP of the belt loop to the waistband. You don’t need to unpick the bottom of the belt loop. As you can see, I’m using the two belt loops at the front.
In the case of my jeans, I also needed to unpick the vertical stitches holding the belt-label on, as it was sewn through the waistband. If your jeans don’t have a belt label, you won’t need to do this.
Take a tape measure and measure the distance between the two belt loop positions. Cut your elastic to this length.
You may need feline approval.
Take your chalk and mark a vertical line on the inside of the waistband directly under the positions of the two belt loops you just unpicked.
This is the slightly scary part. Using small sharp scissors (or your stitch ripper, if you’re feeling brave) carefully cut along that vertical line, being careful not to cut the topstitching at the top and bottom of the waistband. You are only cutting the fabric on the inside of the waistband – don’t cut all the way through to the outside of the jeans. Repeat for the other mark you made.
If you are worried about fraying, you could add some FrayStoppa at this point to those cut edges, but I didn’t bother.
Attach a safety pin to each end of your elastic piece. Insert one end of the elastic into one of the slits you have just made, and use the safety pin to carefully feed it aaaaalll the way along to the other opening.
Keep an eye on the loose end, and when it gets near the opening, use the safety pin on that end to secure it to the waistband just near the slit.
Your elastic should now be all the way through the waistband, and you should have an end poking out of each slit.
Remove your safety pin from the loose end of the elastic, and carefully wiggle the end of the elastic back into the waistband so it extends past the slit by at least a centimetre, and is inside the waistband. You can use your safety pin again here to secure it, or a regular sewing pin if that’s your jam.
Set up your sewing machine with a heavy-duty or jeans needle and thread that’s as close a match to your jeans as possible. You want a wide, tight zigzag stitch – do a couple of tests on some scrap fabric if you need to. It will look kind of like a buttonhole stitch, but much wider.
Position your jeans waistband under your machine needle so that the slit will be covered by the width of the zig-zag stitch. I went over the stitching a couple of times, using the reverse stitch on my machine to go backward, to get a really solid connection, and I also offset a couple of the lines of stitching to make sure all the raw edges were covered.
You can take out that first safety pin now, and try on your jeans again. It might help to try them on inside-out at this point. The loose end of the elastic should still be pinned, so you’ll need to un-pin it, but be careful not to let it slip back into the waistband! Pull that loose end through until you get the fit you want. Secure it again with your safety pin.
You might need to trim the end off, or it might be perfect as is. Tuck the end of the elastic into the waistband, and repeat as above to secure this end of the elastic in place.
Now all that remains is to stitch the tops of the belt loops back in place – use your topstitching thread here if you want. You may need to adjust your machine tension if you do use a thicker thread in the needle.
And you are done! Get yourself into your sweet fitting jeans and paaaaar-taaay!
Just so you know this wasn’t a fluke, I have used this method previously on a pair of cargo-style pants with equally successful results. For this pair I used the belt loops on each side, so most of the elastic gathering happens in the back of the pants.
Both of these pairs of trousers did the month-long trip with me (in fact they were the only long pants I took, except for a pair of active leggings) and both were super-comfortable and robust. No waistband-hitching occurred! I also did a wardrobe cleanup and ditched three other pairs of black jeans that didn’t fit as well as my newly-fitted Scions, so I’m winning all over the place!
I hope you enjoyed this tutorial or found it useful! I haven’t done a tutorial since forever so I’d love to hear from you – please leave a comment below!