Maternity jeans or trousers cost a small fortunte, in some retail outlets, you'd expect to pay a couple of hundred dollars for a pair. Expandable waistlines are probably needed for approximately 6 months of a pregnancy, so really, such a high cost for a short amount of wear, isn't worth the investment.
There is a company, Denim Therapy based in NYC, that offers a maternity service, inserting an expandable side seam into a pair of your existing jeans, the cost of doing so is $60.
Now, while $60 is cheaper than a few hundred dollars, and the service would probably help those that cannot sew, it is entirely possible to adjust a pair of jeans or trousers yourself, inserting a triangular jersey patch into each side seam.
I recall seeing a clever little trick earlier in the year, how to expand the waistline of a pair of jeans that are too small, I can't actually find that link, if I do, I'll update this blog post, but the same idea applies to maternity jeans.
I've adjusted a pair of my own jeans to fit, sewing two panels of t-shirt jersey fabric into each side seam.
You may recall I chopped the bottom away from a thrifted t-shirt to make my t-shirt grocery bag, seen here. This cut away fabric is the jersey I have used for my side seams.
I've cut two triangular shapes, double width fabric (folded) for each, then hemmed the top of my jersey triangles, by folding over, and using a zig-zag stitch:
Next, I've measured my triangles up against the side seams of my jeans:
And cut a straight line down each side, leaving approximately 5cm from the bottom of my triangles:
The next part is a little tricky, pinning my jersey triangle panels underneath each cut side seam, particularly as I'd cut very closely to the belt loop (which I could've removed and reattached, but didn't!):
I've then zig-zag stitched all the way down my cut away side seams, over the top of my jersey triangles:
Here's what the triangle side seams look like on the inside, a little messy, but that's OK:
I've made my side seams larger than I am right now at 12 weeks pregnant, as I still have a way to go. So for now, they are slightly loose fitting, but, with a belt, they fit perfectly. In the coming months, I'll no doubt eliminate the belt!
Worn with a top and jacket, you can barely see the side panel, plus, most importantly, they are comfortable to wear. It cost me less than a dollar worth of material to adjust these jeans, the jeans were also originally purchased for $5 from a trash and treasure market about 2 years ago:
Readers, do let me know if you'd tried this, or try it out in the future. You can use the same technique for adjusting a pair of trousers, jeans or a skirt, where the waistline is a little bit snug.