What a Scalloped Edge Is and Why You'd Want One

A scalloped edge is a wavy, curved border that looks like a series of half-circles sewn into the fabric. Instead of a straight line, the edge dips and rises in a repeating pattern. You see it on pillowcases, quilt bindings, napkins, and the hems of dresses and skirts. It's both decorative and functional—the curves distribute stress more evenly than a sharp corner, so the edge is less likely to fray or tear.

The technique works on any fabric, though lighter materials like cotton, linen, and quilting cotton show the scallops most clearly. You can sew scallops by machine using a preset stitch, or by hand with a needle and thread. The hand method gives you more control over the size and spacing of each curve; the machine method is faster once you understand the settings.

Key Takeaways

  • Mark your scallop pattern on the fabric using a template, coin, or compass before you cut or sew anything.
  • Sew along the marked line with a small stitch length (1.5 to 2 millimeters on a machine, or 1/8 inch stitches by hand) to reinforce the curves before trimming.
  • Trim the fabric close to the stitching line—about 1/8 inch away—and clip into the seam allowance at the inside of each curve so the edge lies flat.
  • Finish the raw edge with a zigzag stitch, binding, or a narrow fold-and-stitch hem to prevent fraying.
  • Press the edge flat after sewing and clipping to set the shape before you wear or wash the finished piece.

Mark Your Scallop Pattern Before You Cut

The first step is to decide how large each scallop should be and mark them on the fabric. A typical scallop is 1 to 1.5 inches wide at the top (the straight part) and about 0.5 inches deep (how far down the curve goes). You can use a coin, a compass, or a purchased scallop template to draw the curves.

Place your template or coin along the edge of the fabric, overlapping it slightly so each curve touches the next one. Use a pencil, fabric marker, or tailor's chalk to trace the outline. Mark the entire edge you plan to scallop before you sew. If you're working on a garment, mark only the edges you want scalloped—usually the hem or neckline, not the seams.

For a professional look, space the scallops evenly. If your edge doesn't divide evenly into whole scallops, adjust the size slightly or place partial scallops at the corners. Measure the total length of the edge, divide by your scallop width, and adjust the width up or down by a few millimeters so the pattern ends neatly.

Sew Along the Marked Line with a Reinforcing Stitch

Once your pattern is marked, sew directly on the line you drew. This stitching reinforces the curves and gives you a guide for trimming. Use a straight stitch on your machine set to a short length—1.5 to 2 millimeters—or hand-sew with small, even stitches about 1/8 inch apart. The shorter the stitch, the stronger the edge will be after you trim.

If you're sewing by machine, use a needle appropriate for your fabric weight (size 70/10 for lightweight cotton, size 80/12 for medium weight). Sew slowly around each curve, lifting the presser foot at the inside corner of each scallop to pivot the fabric smoothly. Don't try to sew in one continuous line if you're new to this—sew one scallop at a time, lift the foot, reposition, and continue.

By hand, use a running stitch or backstitch, keeping your stitches small and even. A backstitch is stronger but takes longer; a running stitch is faster and works fine if your stitches are close together. Anchor your thread with a knot at the start and a few stitches in place at the end.

Trim and Clip the Seam Allowance

After you've sewn the entire scalloped line, trim the fabric close to the stitching. Leave about 1/8 inch of fabric between the stitching line and the cut edge. Use sharp scissors or pinking shears (which cut a zigzag and help prevent fraying). Cut slowly and carefully—if you cut into the stitching, you'll have to resew that section.

Next, clip into the seam allowance at the inside corner of each scallop—the point where the curve dips deepest. Make a small cut perpendicular to the edge, stopping just short of the stitching line. These clips let the fabric fold smoothly when you turn the edge or press it, so the scallops lie flat instead of bunching. Without clipping, the inside of each curve will pucker.

If you're working on a two-layer piece (like a pillowcase or binding), you may need to trim one layer slightly shorter than the other so the layers don't show at the edge. Trim the bottom layer to 1/8 inch and the top layer to 3/16 inch.

Finish the Raw Edge to Prevent Fraying

The raw edge of the scallops will fray if you don't finish it. You have three main options: a zigzag stitch, binding, or a narrow fold-and-stitch hem.

Zigzag stitch: On a machine, set the stitch to a medium-width zigzag (width 2.5 to 3 millimeters, length 1.5 to 2 millimeters) and sew along the trimmed edge. The zigzag wraps around the edge and locks the fibers in place. This is the fastest method and works well on most fabrics.

Binding: Cut a strip of fabric 1 to 1.5 inches wide and long enough to go around the entire scalloped edge. Fold it in half lengthwise and press. Pin it to the edge of the scallops, aligning the raw edges, and sew with a 1/4 inch seam allowance. Fold the binding to the back and hand-stitch it down. Binding looks polished and is especially good for quilts and home décor items.

Fold-and-stitch hem: Fold the raw edge inward by 1/8 inch and press. Fold again by another 1/8 inch and press. Hand-stitch or machine-stitch the folded edge down with a straight stitch. This method is thin and works well on lightweight fabrics, but it's time-consuming.

Press and Set the Shape

After finishing the edge, press the entire scalloped section with an iron on a setting appropriate for your fabric. Use steam if your fabric can handle it—steam helps set the curves and makes them look crisp. Press from the back side first, then the front, using a pressing cloth if needed to protect delicate fabrics.

If you're working on a garment, try it on and check that the scallops hang evenly. If any curves look loose or wavy, press them again with more steam. Let the fabric cool completely before you move it—this sets the shape.

Common Mistakes and How to Avoid Them

The most common mistake is not clipping the inside corners of the curves. Without clips, the seam allowance bunches and the scallops look lumpy instead of smooth. Clip generously—you can always clip more, but you can't undo a clip.

Another mistake is using too long a stitch when you sew the reinforcing line. Long stitches break easily when you trim close to them, and the edge won't hold its shape. Aim for 1.5 to 2 millimeters on a machine or stitches 1/8 inch apart by hand.

Uneven spacing makes scallops look sloppy. Measure and mark before you sew, and adjust the scallop size slightly if needed so the pattern ends evenly. A few millimeters' difference in size is invisible once the piece is finished.

Finally, don't skip the finishing step. A raw edge will fray in the wash and look unfinished. Even a straightforward zigzag stitch takes only a few minutes and makes a big difference in how long the piece lasts.

Frequently Asked Questions

Can I use a scallop stitch on my sewing machine instead of sewing a straight line?

Yes, if your machine has a scallop or shell stitch. Set the stitch width and length according to your manual, and sew along the edge. However, you'll still need to trim and clip the seam allowance afterward. A straight stitch gives you more control and is easier for beginners.

What's the best fabric for scalloped edges?

Cotton, linen, and quilting cotton show scallops most clearly because they hold a crisp edge. Knits and stretchy fabrics are harder to work with because they don't hold their shape as well. Avoid very thick fabrics like denim or canvas unless you're willing to trim the seam allowance very thin.

How do I sew scallops on a curved edge like a neckline?

Mark and sew the same way, but pivot more often as you go around the curve. On a machine, stop with the needle down every inch or so, lift the presser foot, and rotate the fabric slightly. By hand, take smaller stitches on tight curves. Clip the seam allowance more frequently on curves so the edge lies flat.

Do I need a special presser foot for scalloped edges?

No. A standard presser foot works fine. Some machines have a walking foot, which helps feed thick or slippery fabrics evenly, but it's not necessary for scallops.

Can I sew scallops on a finished garment, or do I have to plan for them before I sew the seams?

You can do either. If you're adding scallops to a finished hem, mark and sew them on the existing edge, then trim and finish. If you're planning scallops from the start, mark them before you sew the side seams so the pattern lines up at the corners.