
A simple and low skill way to shrink the waist of dress pants/trousers with side adjusters
I lost some weight and found this video to size down my existing side adjuster dress pants. No sewing machine needed and all the work is hidden, so it's very beginner friendly. All you need is a needle, any colour thread, 2 buttons, a scapel blade and ribbed elastic banding that can fit through the waist channel. It needs to be a pronounced ribbing so that you can slice a slit for the adjuster button and the banding won't rip apart. It took me about an hour to do, and all the work is hidden when worn.
The bunching happens at the sides where the side adjuster is, which is mostly ignorable. The video uses a single elastic band, but my trousers have an after dinner split so I had to use two to hide it. I managed to save on the cost of new trousers + alterations at best, or just waist alterations. The most expensive part of this was the elastic banding, which was $7 AUD for 12 mm × 4 m at my local grocery store.
I will note that this probably only works for 1 size down. Any more will cause excessive bunching.