Seersucker is a light cotton with permanent puckered stripes woven in, so it never needs ironing and stands slightly off the skin in hot weather. It sews like any crisp cotton once you know two things: cut and sew along the stripes, which give you a built-in grainline and seam guide, and press only on the seam line from the wrong side, because a hot iron pressed flat takes out the puckers. Use a universal 70/10 or 80/12 needle, polyester thread, a 2.5 mm stitch, French seams in the light weights, and a double-fold hem turned along a stripe.
Quick reference: how to sew seersucker
| Setting | Recommendation |
|---|---|
| Needle | Universal 70/10 for light, 80/12 for standard seersucker |
| Thread | Polyester all-purpose |
| Stitch length | 2.5 mm; 3 mm for topstitching |
| Presser foot | Standard; walking foot if the puckered rows drag |
| Pre-wash | Yes, warm wash, tumble dry, no ironing |
| Pressing temperature | Cotton setting, tip of the iron on the seam line only, from the wrong side |
| Seam finish | French seams on light weights; overlock or flat-felled on heavier |
What is seersucker, and why does it not need ironing?
Seersucker is woven with two sets of warp threads under different tension: one set is held taut, the other slack, and the slack threads pucker as the cloth leaves the loom. The crinkled stripes are therefore part of the weave, not a finish, and they come back after every wash. That is the difference from plissé or "crinkle cotton", which is embossed with a chemical or heat treatment and flattens over time. Hold a corner to the light: a woven pucker shows the slack threads inside each stripe, with a flat stripe between them.
Classic seersucker is cotton, 90 to 150 g/m² (2.7 to 4.4 oz/yd²), in narrow blue and white stripes, but it also comes in plain colors, checks and wider stripes, and in cotton-polyester blends that crease even less. Sewn up, it stands slightly away from the body, which is why it is cool, and it hides creases that would show on poplin. It is a little sheer in white and the palest colors.
Should you pre-wash seersucker?
Yes. It is cotton, so expect 3 to 5 % shrinkage, and the puckers tighten a little on the first wash, which changes the width slightly. Wash it warm, tumble dry on medium, and shake it out; do not iron it afterwards. The fabric comes out of the dryer ready to cut. Pre-wash the fabric for facings and bindings with it, even if they are a different cotton. The pre-washing guide explains how to stop the raw ends fraying in the machine.
How do you cut seersucker?
The stripes are your friend. They run along the lengthwise grain, so you can lay a pattern's grainline on a stripe instead of measuring from the selvage, and you know at once if the fabric is twisted. Smooth the fabric on the table without stretching it; the puckered rows make it bulge, and flattening it with your hands is enough. Fold selvage to selvage only if the stripes on the two layers line up; otherwise cut a single layer.
Decide what the stripes will do at the seams. On a shirt or a dress, center a stripe, or the flat space between two, on the center front and center back so the garment looks symmetrical, and match the stripes at the side seams by placing the notches on the same stripe. Narrow stripes forgive a small mismatch; wide ones do not. Cut yokes, pockets or a hat brim on the bias, at 45° to the stripes, for a chevron. How to match plaids and stripes has the layout tricks. Use fine pins or weights; the puckered rows hold the pattern paper well.
Which needle, thread and stitch length suit seersucker?
A universal 70/10 for the lightest shirtings and 80/12 for the usual weight, with polyester all-purpose thread at 2.5 mm. The puckered rows can lift the presser foot slightly as they pass, so keep the speed moderate and, if a row of stitching wanders, run the seam along a flat stripe where you can. A walking foot feeds both layers evenly if the puckers of one layer drag against the other on long seams, but most machines manage with the standard foot.
Topstitching is the one place seersucker is unforgiving: a line stitched across the puckers looks wavy however steady your hand. Keep topstitching on the flat stripes and parallel to them, or do without it and understitch instead, which is hidden.
How should you finish seams in seersucker?
Seersucker frays moderately, and most seersucker garments are unlined and worn against the skin in summer, so the enclosed finishes earn their time. A French seam on light weights is tidy and cool; sew it at 6 mm (1/4 in) and then 9 mm (3/8 in) to use a 1.5 cm (5/8 in) allowance. A flat-felled seam suits shirts, shorts and trousers. For heavier seersucker, an overlocked or zigzagged allowance pressed to one side is fine. The seam finishing guide compares them.
Facings deserve a thought. Fusible interfacing flattens the puckers where it is bonded, so an interfaced seersucker facing shows as a flat band through the front. Cut facings and the under-collar from a plain cotton poplin or lawn in a matching color, interface those, and the outside of the garment keeps its texture. The same goes for a waistband or a button band: a plain cotton inner layer looks better and sits flatter.
How do you press seersucker?
As little as possible, and never flat. Press seams from the wrong side with the tip of the iron on the seam line only, on the cotton setting with a little steam, lowering and lifting rather than sliding. A seam roll, or a rolled towel, under the seam keeps the iron off the fabric on either side. If you accidentally flatten an area, a wash or a steam hover brings the puckers back; the fabric is built that way. Finger-press hems and folds, and let the fabric's own body hold them. Save the hot, flat pressing for the plain-cotton facings and bands. How to press seams properly covers the tools.
How do you hem seersucker?
Fold the hem along a stripe. A double-fold hem of 1 cm (3/8 in) then 1.5 or 2 cm (5/8 or 3/4 in), topstitched along a flat stripe, is the standard finish on shirts, shorts and skirts. On a curved hem, a bias facing or binding sits better than a folded one. A narrow hem works, but a rolled-hem foot struggles over the puckered rows, so fold it by hand with two rows of stitching instead. How to hem has both methods.
What should you sew with seersucker?
- Shorts and trousers: pull-on shorts in seersucker are the summer classic; the elastic waist disappears under the texture and they come out of a suitcase ready to wear. Sewly's pattern uses a 1.5 cm (5/8 in) seam allowance that a French seam fits exactly, and lists the elastic length with the notions.
- A shirt, blouse or dress: a button-front or boxy woven top, a shift dress with a plain-cotton facing, or a fit-and-flare dress with a gathered skirt for the fuller look.
- A bucket hat or an apron: a bucket hat with a bias-cut brim and a plain lining, or an apron that never needs pressing after the wash.