Marblehead Swimsuit

This is the Cashmerette Club PDF pattern for August 2024. Not a member yet? Join today at the All Access level to get this pattern!

Style and support for large boobs in a swimsuit, all without an underwire? It’s possible with the Marblehead Swimsuit!

Featuring Cashmerette’s famed non-wired support, the Marblehead offers two styles of top—a bikini top or tankini —and a classic swimsuit bottom with two height options. The fun tie style hides a fantastically supportive integrated soft bra—and it opens in the front, so no need to reach behind your back.

Choose from different options to get the right level of support, and then head to the beach without worrying about wardrobe malfunctions!

This Cashmerette pattern includes:

A sizing calculator which will tell you exactly which size to make
A beautifully illustrated and detailed instruction booklet, to guide you no matter your sewing level
A free video sewalong that you can watch anytime

Want to see how this pattern will look on you? Sketch your plans on a body outline croquis that's custom made to your measurements with MyBodyModel. Learn more »

---

SEWING LEVEL

Advanced beginner

SIZING

Bikini/tankini: band sizes 28-54, cup sizes C-J

Bottoms: 0-32, Includes 35-62” hip. Find your size in seconds using our size calculator.

Separate files for both size ranges (0-16 and 12-32) are included. How to choose your size range »

RECOMMENDED FABRIC

There are a number of options when it comes to choosing the fabrics for your Marblehead swimsuit. Which fabrics you use, and the amount of stretch in those fabrics, will affect the support and fit of your swimsuit. See pattern instructions for more details.

MAIN FABRIC: Swimsuit fabrics with between 10% and 50% stretch in each direction (4-way stretch) such as nylon/lycra, spandex.

BIKINI CUP LINING: Non-stretch bra cup lining (maximum Support), or self-line with main fabric (medium support), or swimsuit lining fabric with stretch to match main fabric (minimum support).

BIKINI BACK LINING: Mid-weight stretch fabric such as nylon/spandex powermesh with 25-50% stretch in one direction and at least 10% in the opposite direction (maximum support), or self-line with main fabric (medium Support), or swimsuit lining fabric with stretch to match main fabric (minimum support).

BOTTOM LINING: Swimsuit lining fabric with stretch to match main fabric, or self-line with main fabric.

NOTIONS

BIKINI/TANKINI: Stretch needle, polyester thread, 11/2 yd (1.4 m) of ¼” (6 mm) wide rubber/swimwear elastic, 3/8 yd (0.3 m) of ¼” (6 mm) wide plastic boning with casing, 13/8 yd (1.2 m) of 1” (2.5 cm) wide non-roll elastic.

BIKINI only: 1” (2.5 cm) wide clasp/hook for band.

BOTTOMS: 2 yd (1.8 m) of ¼” (6 mm) wide rubber/swimwear elastic, 11/2 yd (1.2 m) of 1” (2.5 cm) wide non-roll elastic.

OPTIONAL: 1/2 - 5/8” (12 – 16 mm) wide hook, 4” (10 cm) of bias tape in a matching color -- width of tape when folded should match the hook.

---

Model details

Rachel (navy bikini) is wearing a size 38I top and 20 bottoms. Her measurements are high bust 43”, full bust 48”, waist 38”, hip 50”, and she’s 5’5”.