Note November 21st 2021: I have taken down the link to the free pattern I used to offer. The reason is simple – I can’t stand behind a product that is so size non-inclusive, and choosing sewing as my hobby I will not be dedicating time to edit the pattern. There are lots of both free and paid for underwear patterns available on the internets that are similar in style. Happy sewing!
Underwear. Knickers. Pants. Undies. Whatever you call them, I have a free pattern for sewing your underwear that I want to share with you! I’ve included several sizes; XS, S, M, and L – so I hope that is helpful!

I’ve been making underwear from t-shirts for years. My first undies-sewing attempt taught me that I should follow the grain of the fabric. The second time I discovered that twin needles are awesome. Most recently I’ve been playing around with different kinds of elastics to finish the underwear, and I’ll be showing that soon!

The “t-shirt underwear” pattern I’ve made is in the bikini brief style, but it can easily be tweaked to fit you perfectly. It’s graded in four sizes; extra small, small, medium, and large. I think the sizes should be pretty standard, but do let me know your feedback!

So if you want to make your own underwear, click the image above or the link below to download the pattern! The pdf includes the choice of 1 page in the 11″ X 17″ format, or 3 pages that you line up and tape together (it is formatted to work for both US Letter and European A4 – just make sure there is no resizing when you print).
Download the t-shirt underwear pattern!
I’ll be doing a couple of posts on sewing the underwear, the basics of how to sew them together, and then some options of how to finish them with different types of elastics. So be sure to come back for that!
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Did you miss a post in this underwear-making adventure?
If you make a pair (or five?) from this pattern, please share! Comment, link back, and show off!