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The Journal

How to Turn an Old Sweatshirt into a Stylish Oversized Sweatshirt

06 December 2025

Turning an old sweatshirt into an oversized style can be a fun, creative project that refreshes your wardrobe without breaking the bank. With a little ingenuity and a few simple tools, you can give your old clothes a second life and follow the oversized sweatshirt trend. We'll walk you through the project step by step.

What you'll need

  • An old sweatshirt
  • Scissors
  • A sewing machine (optional)
  • Thread matching the colour of the sweatshirt
  • A tape measure
  • Pins
  • Tailor's chalk or a fabric pencil

Steps to transform your sweatshirt

1. Choose the right sweatshirt

To start, pick an old sweatshirt that still has a good texture and whose colour or pattern you like. Also make sure the fabric is sturdy enough to be reworked.

2. Measure and cut

Take the tape measure and decide how much extra length and width you want to achieve that oversized effect. Mark the areas to cut with tailor's chalk. Then use the scissors to cut the bottom of the sweatshirt, as well as the sleeves if they need adjusting to your desired oversized style.

3. Widen the sweatshirt

To add width, you can unpick or cut open the side seams of the sweatshirt. Add a contrasting or stretchy fabric panel to each side to get the width you want. This piece of fabric can be sewn by hand, or by machine for extra strength.

4. Adjust the sleeves and neckline

If the sleeves turn out to be too tight, you can widen them too by adding triangles of fabric under the armpits. For the neckline, cut away a little fabric for a relaxed, worn-in effect typical of oversized sweatshirts.

5. Try it on and personalise it

Once all the alterations are done, try on the sweatshirt to check that the adjustments suit you. Take the opportunity to add finishing touches such as patches or embroidery to personalise it to your taste.

Conclusion

Turning an old sweatshirt into an on-trend oversized sweatshirt is an affordable, sustainable way to upgrade your clothing collection. This transformation doesn't necessarily require advanced sewing skills, just a bit of creativity and patience. Feel free to experiment and adapt these tips to your own style for a result that is truly you.

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