Clothing Care

How to Sew a Button and Fix a Hem

A beginner's guide to two essential clothing repairs — sewing on a button and fixing a fallen hem — with the simple tools, stitches, and steps anyone can learn.

Spools of thread and a needle laid out for simple clothing repairs.
Photograph via Unsplash

A shirt with a missing button or trousers with a hem hanging loose usually get exiled to the back of the closet, worn less and less until they're quietly given up on. That's a shame, because both problems are among the easiest repairs there are. Fixing them takes minutes and a few cents of thread, not a trip to a tailor.

You don't need to be handy or own a sewing machine. These are hand repairs, done on the sofa, that anyone can learn in an afternoon and use for the rest of their life. Once you've sewn one button back on, you'll wonder why you ever let a good shirt sit unworn over something so small. Learning these two fixes is the practical starting point for keeping clothes going.

Put together a basic sewing kit#

Before any repair, gather a small kit. You can buy a ready-made one cheaply, or assemble your own, and it lives in a drawer for years. The essentials are few:

  • Hand-sewing needles in a couple of sizes
  • Thread in a handful of common colors — black, white, navy, gray, and beige cover most clothes
  • Small scissors that cut cleanly
  • A few spare buttons, including the ones that come sewn inside new garments
  • A thimble if you're working with thick fabric, and a needle threader if your eyes appreciate the help

That's genuinely all you need for the repairs in this guide. Match your thread to the garment as closely as you can — a shade too dark reads better than a shade too light — and you're ready to start.

Sew a button back on#

A loose or missing button is the most common repair of all, and it's a five-minute job. Start by cutting a length of thread about the span of your arm, thread the needle, and bring the two ends together so you're sewing with a double strand for strength. Tie a knot at the end.

Working from the inside of the fabric, push the needle up through where the button belongs so the knot anchors underneath and hides. Place the button over the spot and sew up through one hole and down through the one diagonal to it, then repeat with the other pair of holes, making an X pattern (or two parallel lines for a two-hole button). Six or so passes through each pair is plenty.

Lay a toothpick or a matchstick across the top of the button while you sew, and stitch over it. When you remove it at the end, you'll have a little slack that becomes the "shank" — the small stem of thread that lets the button sit and fasten properly.

To finish, bring the needle out between the button and the fabric, wrap the thread around that slack stem a few times to form the shank, then push the needle to the inside and knot it off against the fabric. Trim the tail. Give the button a gentle tug to check it's secure, and you're done.

Fix a fallen hem#

A hem that's come undone — on trousers, a skirt, or a dress — usually hasn't torn; the thread has just given way, leaving a flap of fabric hanging. The repair is a slip stitch (also called a blind hem), designed to be nearly invisible from the right side because it only catches a thread or two of the outer fabric.

Turn the garment inside out and fold the hem back up to where it should sit, matching the original crease so the length stays right. Pin it in place if that helps. Thread your needle with a single strand this time, in a matching color, and knot the end. Anchor the knot in the folded edge of the hem where it won't show.

Now work along the hem with small, spaced stitches: catch just one or two threads of the outer garment fabric — so little that nothing shows on the front — then run the needle a short distance inside the fold of the hem, and repeat. Keep your stitches loose rather than tight, so the fabric doesn't pucker. Move steadily along until you reach the end, then knot off inside the fold and trim.

If you have no time or no thread, iron-on hem tape is a genuine quick fix that holds through gentle wear, though a few stitches last far longer. For a hem you want to stay put through many washes, thread beats tape.

Handle small tears and loose seams#

The same basic skills stretch to a couple of other quick saves. A seam that has popped open — where two pieces of fabric were joined and the stitching failed — is fixed by turning the item inside out and sewing along the original seam line with a simple running stitch (in and out in a straight line) or a stronger backstitch, overlapping the intact stitching at each end so it won't unravel again.

Small holes and snags are a slightly different job, and a bad repair can look worse than the hole. For a tiny hole in a knit, gently drawing the edges together from behind can close it without a visible patch. For anything larger or in a very visible spot, it's worth pausing before you improvise — a clumsy fix on a nice garment is hard to undo. Knits in particular have their own rules; if sweaters are the issue, how to care for wool and cashmere covers keeping them whole in the first place.

A snag — where a single thread has been pulled into a loop, common on knits and fine fabrics — is one of the most satisfying quick fixes and one of the most commonly botched. The instinct is to cut the loop off, but that creates a hole that can unravel. Instead, gently work the pulled thread back through to the inside of the garment using a needle or a small crochet hook, spreading the surrounding fabric to redistribute the tension. Done right, the snag simply vanishes and the garment is whole again. It's a two-minute rescue that saves a lot of otherwise fine sweaters and shirts.

Knowing when to call a tailor#

Home repairs are perfect for buttons, hems, small seams, and minor snags. They're not the answer for everything, and there's no shame in that. A ripped zipper, a torn lining, resizing a garment, or a large tear in a visible place is where a tailor or alterations shop earns their fee, often for less than you'd expect, and the result looks professional because it is.

The point of learning these basics isn't to become a seamstress — it's to stop losing perfectly good clothes to five-minute problems. Keep your little kit in a drawer, fix the button the evening it comes loose instead of setting the shirt aside, and tack up the hem before the garment gets forgotten. Clothes that get small repairs stay in rotation for years, and there are few cheaper ways to keep a wardrobe looking cared-for. A needle and thread are a quiet superpower once you're not afraid of them.

Theo Almeida
Written by
Theo Almeida

Theo is all about versatile basics and good fit. He writes clear, unfussy guidance for building a wardrobe that just works.

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