This pattern is available to active Cashmerette Club members only. This is the PDF pattern for August 2024 and includes sizes 28C-54J (swimsuit top) and 0-32 (swimsuit bottom).
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 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 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.
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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 .
Separate files for both size ranges (0-16 and 12-32) are included.
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.
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PDF pattern information
New to PDF sewing patterns?
The PDF comes in separate files for the bikini/tankini top, lower tankini section, and bottoms. The bikini/tankini top PDF comes in separate file sizes for each band/cup size, so you only need to print your size. Files are delivered as .zip files which can be downloaded on a computer, but not on a mobile device. For more on PDFs, see the .
Print at Home ZIP file size: 28.7 MB
A0 ZIP file size: 22.4 MB
Instructions: 49 pages
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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”.
Carrie (green tankini, green bikini) is wearing a 30F top and a size 10 bottoms. Her measurements are high bust 34”, full bust 38”, waist 31”, hip 39” and she’s 5’4”.
