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How to Lengthen a T-Shirt with a Waistband

Learn how to lengthen a t-shirt with a waistband. This is a great sewing tutorial for t-shirts that are too short!

Remember my post where I compared a couple of different fabrics? Well, two of those shirts shrunk a little, and I really wanted to lengthen them so that I would actually wear them. The colors and fit were right, but I really get stuck up on length.

Since I’m tall I get really bugged when something is too short. Anyway, I tried a new way of lengthening a shirt and put together a little tutorial in case you’d like to use it!

How to Lengthen a T-Shirt with a Waistband

Do you want to learn to lengthen? Try some of these tutorials:

How to Lengthen a T-Shirt with a Waistband

Supplies

directions

Seam rip the existing hem.

t-shirt before lengthening

Cut the stretch fabric 8″ tall by 90% width of the bottom of the shirt. Cut the piece in half widthwise so that you essentially have a back and a front.

Fold the fabric in half lengthwise with right sides together. Sew with a straight stitch 1/4″ from the edge but start 3/8″ from the raw top edge. Sew down to the fold.

seam rip hem. cut waistband pieces of fabric

Cut through the seam allowance 3/8″ from the top raw edge right where the stitching starts, but do not cut through the stitching.

Turn the pieces right sides out and poke out the corners. The cut seam allowance at the top can come out.

sew sides, turn right side out and poke out corners,

Now you’re going to combine the two pieces. There will be four tiny seams. Sew the 3/8″ seam allowance that’s poking out from the front to the back with right sides together. This isn’t tricky to sew, it’s just a little tricky to visualize.

match seams

Once the tiny seams are sewn together the back and the front will be sewn together into a band.

Divide the bottom of the shirt into four. Divide the band into four. Match the sections up making sure the side seams match up with the side seams and sew with a stretch stitch and a 3/8″ seam allowance.

baste top together

Either topstitch the seam allowance up towards the shirt or tack the seam allowance up at the side seam to prevent the seam allowance from showing in the slit.

sew onto bottom of t-shirt. How to Lengthen a T-Shirt with a Waistband

Done! I hope this can help with any t-shirts that you don’t wear because they aren’t the right length!

If you make something using this pattern, I’d love to see! Please share it on social media with the hashtag #heatherhandmade and tag me!

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Ok, brilliant! Extra length, but it totally doesn't look it. I love the slits on the side. I'm going to have to remember this. Thanks for sharing the method.