Asymmetric Hem on a Dress: Fix or Replace?

Assess the cause first

Before cutting into a dress, determine whether the hem is supposed to be asymmetric. Some styles, like high-low hems or handkerchief hems, are intentionally uneven. Compare the left and right side lengths while the dress is on a hanger. If the difference is small and the design is even, the issue is likely a droop or a seam placement problem.

Look at the side seams: they should fall straight from the underarm to the hem. If one side seam is longer or the dress twists at the waist, the whole garment is off-balance, and a simple hem adjustment will not fix it. Check the shoulder seams as well; a shifted shoulder can make the hem appear uneven.

• Hang the dress overnight to let wrinkles settle.
• Measure from the natural waistline to the hem at several points around the dress.
• Look for a deliberate design element like a curved or dipped front.

Check the fabric grain

Fabric grain refers to the alignment of the warp and weft threads in a woven fabric, or the knit loops in a jersey. When a dress is cut off-grain, the garment will not hang straight, and the hem will appear uneven even after leveling. To test the grain, lay the dress flat and smooth out the fabric. Run your fingers along the lengthwise and crosswise lines; they should meet at right angles.

If the fabric has a obvious diagonal stretch, like a bias-cut dress, the hem may naturally settle lower on one side as the fabric relaxes. A bias cut dress often needs a longer settling period, but persistent distortion can be a design feature. For knits, check if the side seams curve or if the fabric has a distinct twist. A twisted knit dress is difficult to repair because the fabric itself is not straight.

The concept of fabric grain also affects sewing and repair. If you are unsure whether the grain is straight, compare the hem line with the pattern repeat or the selvage edge if visible. Link to our guide on fabric grain if available, or our hem shapes page to see how different hems behave.

Measure the hem allowance

The hem allowance is the extra fabric folded up inside the hem. A standard allowance is 1 to 2 inches (2.5 to 5 cm), but many mass-produced dresses have only 1 inch or less. To level a hem, the tailor needs enough fabric to shorten the longer side or to let down the shorter side if the difference is small. If the allowance is less than half an inch, you may not be able to adjust it without removing the original hem entirely.

Check the hem finish: a rolled hem or a lettuce edge has almost no allowance, making alteration impractical. A blind hem or a turned-and-stitched hem usually has a wider allowance. Understand the hem allowance on your dress with our dress hem allowance guide, and see if the hem finish is durable via hem finish.

If the allowance is generous and the fabric is not stretched, a tailor can simply rehang the hem at the longest point. This is a routine job for any seamstress. However, if the hem allowance is tight and the dress is already too short, there is no room to adjust.

Repair options: raising the low side

The most common fix for a slightly uneven hem is to shorten the dress so that the hem falls at the same distance from the floor all around. The tailor presses the new fold and trims the excess fabric, then re-stitches. This works when the side seams are straight and the fabric is stable. If the fabric stretches, a stay stitch or seam binding may be used to prevent further distortion.

For a dress that is too short to be shortened, the tailor may try to let out the hem on the high side if there is extra fabric inside. This is only possible if the original hem allowed enough depth and the fabric does not show needle holes. In many cases, the original needle holes will remain visible on delicate fabrics.

If the dress is made of a fabric that tends to stretch, like a rayon jersey, even a professional hem may not stay even. Consider the knit vs. woven fabric tradeoff. A woven cotton or linen dress will hold a straight hem better than a knit.

When replacement makes sense

If the fabric grain is distorted, the dress is twisted, or the side seams are not aligned, shortening the hem will not correct the problem. The hem will continue to look crooked because the fabric itself is biased. This often happens with dresses cut on the bias, with low-quality knits that lose their recovery, or after many machine washes that stretch the fabric.

Another sign that repair is limited is when the dress has other structural issues, such as a twisted side seam that runs diagonally from the armhole to the hem. Even a skilled tailor would have to reconstruct the entire garment, which is usually not worth the effort. In these cases, replacing the dress is more practical.

Check our alteration potential guide to evaluate how much you can reasonably alter a dress. If the hem is just one symptom of overall poor fit, the dress may not be a good candidate for repair.

Also compare the dress to its original silhouette: if the hem unevenness comes from a stretched out waistband or a misshapen lining, the problem is not the hem at all. See our separate guide on skirt bunches under a belt for a related issue.

Environmental tradeoff: repair vs. replace

Repairing a garment is almost always better for the environment than discarding it. The U.S. Environmental Protection Agency reported that in 2018, about 11.3 million tons of textiles were landfilled, contributing to waste. Extending the life of a dress through a simple hem fix reduces the demand for new production and keeps fabric out of landfills.

If you decide to replace the dress, consider the fabric's end-of-life impact. CottonWorks, a textile industry resource, notes that cotton microfibers can biodegrade after use, unlike synthetic fibers that persist in the environment. Choosing a cotton dress over polyester or nylon can reduce long-term pollution if the garment eventually wears out. Read more about sustainable dress fabrics to make an informed choice.

The USDA Agricultural Research Service (ARS) is part of the agency that supports agricultural research relevant to fiber crops. While the ARS page does not directly address hems, its existence underscores the role of agricultural science in developing renewable materials. When you do buy a replacement, look for fabrics with documented sustainability practices.

Choosing a replacement with a stable hem

If you decide to replace the dress, focus on constructions that resist hem distortion. A-line dresses with a straight-cut skirt are less prone to twisting than bias-cut or flared styles. Sheath dresses and shift dresses have a simple vertical drape that hangs evenly. A-line dresses are especially forgiving for uneven floors or body asymmetry. See our best A-line dresses for options.

For work, a structured midi dress with a straight hem and a sturdy woven fabric will hold its shape. The best work dresses list includes many tailored styles. For casual wear, a cotton poplin shirtdress or a denim dress has a firm hand that keeps the hem line sharp. Explore the best casual dresses for fabric choices.

Avoid heavy embellishments or multiple layers at the hem, which can pull the fabric down unevenly. A clean, plain hem with a side seam that runs straight is your best bet. Compare silhouettes in our dress silhouette types guide.

What to pick for your use

Questions

Can a tailor fix an uneven hem if the dress is too short?

It depends on the hem allowance. If there is less than half an inch of extra fabric, the tailor cannot let it down enough to level the hem. The dress may need to be replaced instead.

How do I know if my dress is cut off-grain?

Lay the dress flat and check that the side seams are straight and the hem lines up with the fabric's crosswise threads. If the fabric pulls diagonally or the seams twist, the grain is likely distorted and repair is limited.

Is it worth repairing a hem on a cheap dress?

If the fabric is sound and the hem allowance is sufficient, a simple hem adjustment is inexpensive and extends the life of the garment. But if the dress has multiple structural issues, replacement may be more economical.

What is the best fabric for a dress with a straight hem?

Woven cotton, linen, or wool hold a pressed hem well. Knits like ponte or scuba are stable, while rayon jersey can stretch and distort. Check the fabric content and weave before buying.