Bikini and Swimsuit Sewing Patterns for Women, Ready to Produce

Bikinis and swimsuits are built from small pieces and demand precision: the elastic, the lining, and the stretch of the spandex decide the fit more than any later adjustment. The patterns in the catalog cover triangle, high-rise, and one-shoulder bikinis and one-piece swimsuits, all for women, with an adult size range and a sewn sample.

The Modeltex catalog has 26 bikini sewing patterns (25 for women, 1 for girls), all approved with a sewn sample and with the size range available on each product page; the most affordable PDF starts at US$23 with the standard size selection.

Bikinis and one-piece swimsuits produced in series

There are triangle bikinis with ties, knotted straps, or adjustable straps, with high-rise bottoms, one-shoulder styles, puff sleeves, mesh panels, fringe, and contrast piping. Among the one-piece swimsuits there are halter, low-back, ruffled, mesh-cutout, and deep-neckline styles with a ring. All are for women. The pieces are tiny: a pattern fits on just a few A4 sheets, which is enough to test the sample before moving to a plotter.

Spandex, lining, and elastic: workshop decisions for a bikini

Swimwear is sewn in nylon or polyester spandex fabric that stretches in both directions. The pattern is drawn with negative ease: the garment measures less than the body and the fabric closes the gap, so don't swap in a less stretchy spandex without testing. Bottoms and cups are usually lined, which also prevents see-through in light or wet fabric. The edges take elastic sewn with a stretch stitch, such as zigzag, overlock, or coverstitch, with a ballpoint needle.

Common mistakes when producing bikinis and swimsuits

If the bikini is sublimation-printed, the base has to be polyester and the panels are printed before cutting; for that, the pattern is available as a vector file (DXF) on request.

Tight elastic: it marks the skin and distorts the edge. Loose elastic: it gaps at the leg and the waist. Set the length per size.
Switching spandex suppliers without testing: the recovery changes and so does the final size.
Directional print: it forces you to cut all pieces in the same direction and raises consumption.

Common fabrics for bikinis: nylon spandex, polyester spandex, printed or sublimated spandex, swimwear lining, stretch mesh.

Available bikini sewing patterns

Bikini 8 03 — bikini bottoms with contrast piping — from US$23
Bikini 8 01 — triangle bikini with side ties — from US$23
Bikini 5 — triangle bikini with tie straps — from US$23
Bikini 4 — one-shoulder bikini with high-rise bottoms — from US$23
Bikini 26 — crossover bikini with woven trim — from US$23
Bikini 23 — bikini with strapped top and high-rise bottoms — from US$23
Bikini 18 — bikini with puffed sleeves and bow — from US$23
Bikini 17 — one-shoulder bikini with ruffle — from US$23
Bikini 16 — wide-top bikini with high-rise bottoms — from US$23
Bikini 15 — triangle bikini with bow and classic bottoms — from US$23
Bikini 14 — bikini with puffed sleeves and side tie — from US$23
Bikini 11 — bikini with mesh panel at the center — from US$23
Bikini 10 — triangle bikini with tropical print and fringe — from US$23
Bikini 1 — high-rise bikini with cutouts — from US$23
Bikini 01 Cup — triangle bikini with adjustable straps — from US$23
Swimsuit 153-L — one-piece swimsuit with a low back and decorative tie — from US$23
Swimsuit 152-L — one-piece printed swimsuit with a plunging neckline and ruffled straps — from US$23
Bikini 131-L — bikini with contrast piping — from US$23
Women's Swimsuit 026 — one-piece swimsuit with mesh side panels and a low back cutout — from US$23
Women's Swimsuit 025 — ribbed one-piece swimsuit with a plunging neckline and ring detail — from US$23
Women's Swimsuit — one-piece halter swimsuit with a plunging neckline — from US$23
Girls' Swimsuit 02 — athletic one-piece swimsuit with a crossed back and shorts-length legs — from US$23
Bikini Set 02 — triangle bikini set with adjustable straps — from US$23
Bikini 22-L — bikini with ruffled top — from US$23
Bikini 27-L — triangle bikini with color panels — from US$23
Bikini 12-L — triangle bikini with thin straps — from US$23

Frequently asked questions about bikini sewing patterns

What fabric is used to produce bikinis and swimsuits?

Nylon or polyester spandex fabric, which stretches in both directions and recovers its shape. Nylon is softer and polyester tends to resist chlorine better; both are used with a lining in the bottoms and cups. If it will be sublimated, the base has to be polyester. Ask the supplier for the stretch figure so you can adjust the elastic.

What elastic does a bikini take?

Swimwear elastic on the edges of the bottoms and around the cups, sewn to the fabric and stretched evenly. Adjustable straps add sliders or rings, and tied straps are made from the same spandex. Before cutting the run, measure how much the roll stretches and only then set the elastic length for each size.

What is the difference between a bikini pattern and a one-piece swimsuit pattern?

A bikini is two pieces that can be sold in different sizes on top and bottom. A one-piece swimsuit is a single garment where torso length governs, just as in a bodysuit, and it often has cutouts and openings that complicate the marker. Each one is quoted and tested separately.

Can a bikini be sublimated?

Yes, if the fabric is polyester with spandex: sublimation only fixes on polyester, not on nylon. The panels are printed with the pattern outline before cutting, and since heat shrinks the fabric slightly, you have to compensate for it. The sublimation patterns guide explains bleed and marks.

Guides for producing bikinis

Related garments

See all garments, the full catalog (more than 2,000 sewing patterns), the PDF A4, plotter and DXF/AAMA formats, or request custom patternmaking.