Hand hemming works best for straightforward, straight hems on lightweight fabrics

You can hem a dress by hand using a needle, thread, and basic stitches — no machine required. Hand hemming takes longer than machine sewing but gives you more control, works on delicate fabrics that machines can damage, and produces a finish that looks intentional rather than rushed. The most common hand stitch for hemming is the slip stitch, which is nearly invisible from the outside because the thread runs inside the fold of the fabric.

Hand hemming works best on straight hems, lightweight to medium-weight fabrics like cotton, linen, and silk, and dresses where you have time to work carefully. It is harder on heavy fabrics like denim or wool, and on curved hems like those on A-line skirts, because the stitches have to bend with the curve and are more visible. If your dress has a very curved hem or is made of heavy material, you may want to take it to a tailor instead.

Key Takeaways

  • The slip stitch is the standard hand-hemming stitch because it hides inside the fold and is nearly invisible from the outside of the dress.
  • You will need a needle, thread that matches your fabric color, pins, scissors, and a measuring tape or ruler to mark the new hem line.
  • Measure and pin the hem while wearing the dress or with it on a dress form, because fabric hangs differently depending on how it sits on a body.
  • Hand hemming a full dress typically takes one to three hours depending on the hem length and your experience with hand sewing.
  • Press the hem with an iron after stitching to set the fold and make the finished hem lie flat and smooth.

Measure the hem while the dress is on a body or dress form

The most common mistake in hemming is measuring a flat dress on a table. Fabric hangs and drapes differently depending on whether it is lying down or worn, so your hem will be uneven if you do not measure it in the position where it will actually hang. Put the dress on yourself or on a dress form that is similar to your size, and have someone help you mark the new hem line with pins or chalk.

Decide how long you want the dress to be — measure up from the floor or from your knee, depending on the style. Use a measuring tape or ruler to make sure the distance from the hem line to the floor or to your knee is the same all the way around. Mark the line with pins placed horizontally every 2 to 3 inches, or use tailor's chalk to draw a light line. Step out of the dress carefully so you do not disturb the pins.

Fold and press the new hem line before you stitch

Lay the dress flat on a table or ironing board with the inside facing up. Fold the fabric up along your pin line so the raw edge of the fabric is now hidden inside the fold. Press this fold with a hot iron to crease it — the crease helps you stitch in a straight line and makes the finished hem look crisp. Let the fabric cool before you move it.

Decide how wide you want the hem to be. Most dress hems are between 1 and 2 inches wide. Fold the raw edge up again so it is now tucked inside the first fold, creating a double layer. This double fold hides the raw edge and prevents the fabric from fraying. Press this second fold as well. Pin the hem in place with pins running perpendicular to the fold, spaced about 2 inches apart.

Thread your needle and knot the end

Cut a length of thread about 18 to 24 inches long — longer than that and it tangles easily as you work. Choose thread that matches your fabric color as closely as possible. If you cannot find an exact match, pick a shade slightly darker rather than lighter, because darker thread is less visible. Thread the needle and tie a knot at one end by wrapping the thread around your finger, rolling it off, and pulling tight.

Start at a seam if the dress has one, because seams are stronger and your knot is less likely to pull through the fabric. If there is no seam nearby, start at an inconspicuous spot like the inside back of the dress. Bring the needle up through the fold of the hem from the inside so the knot stays hidden in the fold.

Use the slip stitch to sew the hem nearly invisibly

The slip stitch works by running the thread inside the fold of the hem, then catching just a few threads of the dress fabric above the fold. This keeps the thread hidden and makes the stitch nearly invisible from the outside. Start with your needle coming up through the fold. Move the needle horizontally about 1/4 inch along the inside of the fold, then push it back into the fold and slide it along inside the fold for about 1/4 inch.

Bring the needle back out of the fold. Now push it directly across into the dress fabric just above the fold — you want to catch only 2 or 3 threads of the fabric, not go all the way through. Slide the needle along inside the dress fabric for about 1/4 inch, then bring it back out and push it back into the fold. Repeat this pattern: 1/4 inch in the fold, catch a few threads in the fabric above, 1/4 inch in the fold again. Keep your stitches small and even.

Work your way around the entire hem. Every 12 to 18 inches, tie off your thread by making a small knot inside the fold, then start a new length of thread. This way, if one thread breaks, you do not lose the entire hem. When you reach the end, tie off your thread inside the fold and trim the excess.

Press the finished hem to set the stitches and remove wrinkles

Once you have finished stitching all the way around, lay the dress flat and press the entire hem with a hot iron. This sets the stitches, removes any wrinkles from the pinning and folding, and makes the hem lie flat and smooth. Press from the inside of the dress first, then flip it over and press the outside. Let the dress cool completely before you wear it or move it.

Try on the dress to check that the hem hangs evenly and is the length you wanted. If you notice any spots where the stitches are loose or the hem is not lying flat, you can add a few more stitches in those spots. If the hem is still not quite even, you can carefully remove the stitches with a seam ripper or small scissors and re-hem that section.

Frequently Asked Questions

What kind of thread should I use for hand hemming?

Use all-purpose polyester or cotton thread that matches your fabric color. Polyester is stronger and less likely to break, while cotton blends better with natural fabrics. Avoid thick embroidery thread or cheap thread that frays easily — good thread makes stitching easier and the hem lasts longer.

Can I hand hem a curved hem like on an A-line dress?

You can, but it is harder because the fabric curves and your stitches have to curve with it. The stitches are more visible on a curve. If you are new to hand hemming, start with a straight hem. Curved hems are easier to do on a machine or by a tailor.

How do I fix a stitch that came loose?

If just one or two stitches came loose, thread your needle and tie a knot, then push the needle through the fold near the loose spot and stitch over that section again. If the entire hem is coming loose, you may need to remove all the stitches and re-hem it. Use a seam ripper or small scissors to carefully cut and pull out the old thread.

What should I do if my thread keeps breaking?

Breaking thread usually means the thread is cheap, old, or tangled. Use fresh thread from a new spool, and keep your thread length to 18 to 24 inches so it does not tangle as you work. If you are pulling too hard on the thread, loosen your grip — the stitches should be snug but not tight enough to strain the thread.

Can I hand hem a dress made of stretchy fabric like jersey or spandex?

Hand hemming stretchy fabrics is difficult because the fabric moves and your stitches can pucker or break. If you must hand hem a stretchy dress, use a ballpoint needle instead of a regular needle — it slides between the fibers instead of piercing them. Work slowly and do not pull the thread tight. A machine or tailor is a better choice for stretchy fabrics.