✂️ How to Sew a T-Shirt Neckband (and Fix Gaping Necklines!)

If you’ve ever finished sewing a t-shirt only to find that the neckline sticks out or looks baggy, you’re not alone. Learning how to sew a neckband is one of the trickiest parts of sewing stretch garments — but the good news is, there’s a simple fix!

👉 Watch my 2-minute YouTube tutorial here:

✨ Neckbands explained ✨

Why Neckbands Should Be Smaller Than the Neckline

A well-fitted t-shirt neckband should measure 70–90% of your neckline. That means the neckband is deliberately 10–30% smaller than the neckline. The smaller size gently pulls the neckline in, giving you a smooth, professional finish.

If you cut your neckband the same length as your neckline — like you might with a woven garment — the result will almost always be a gaping or uneven neckline that won’t sit flat.

The Secret: Quartering Your Neckband and Neckline

The best way to avoid a wavy or stretched-out neckline is to quarter your neckband before sewing:

1. Fold your neckband in half, then in half again to mark four equal points.

2. Do the same with your neckline.

3. Pin or clip these quarter points together.

4. Sew with the stretch evenly distributed around the neckline.

This simple step ensures your t-shirt sewing projects always look neat and professional.

Quick Tips for Perfect Neckbands

Remember:

• Neckband = 70–90% of neckline.

• Always quarter both pieces before sewing.

• Stretch evenly while stitching for a smooth, flat finish.

With these two techniques, you’ll never have to worry about gaping neckbands again.

✨ Ready to level up your me-made wardrobe? Save this post and try the technique on your next DIY t-shirt project!

👉 And if you want more step-by-step sewing tutorials, subscribe to my YouTube channel Needle Say More.