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All About the Crosby Swimsuit

Fabric resources, fitting details, and tutorials to help you build your skills.

Build Your Wardrobe with the Crosby Swimsuit

The Crosby swimsuit is the ultimate feel-good swimsuit, with a surplice bodice, shirring at the side seams, a supportive shelf bra with optional foam cups, cute convertible straps at the back, and just the right amount of coverage, without sacrificing style.

Sew it up in swimwear fabrics that have 4-way stretch, and don’t forget the swimwear elastic.

Krystal is wearing a size 10 Crosby swimsuit with 1 1/2” added to the waist and hip and 1/4” added to the rise. Her measurements are 38 1/2”, 32”, 41 1/2” and she is 5’9”.

Tutorials to Build Your Skills

Sewing swimwear doesn’t have to be intimidating. Here are some tutorials that will help.

Learn How to Customize the Crosby Swimsuit

Learn about the best fabrics for Crosby in this month’s article How to Shop for Swimwear Fabric.

Wondering what to pair with the Crosby swimsuit? Get inspired by a special beachwear edition of different Seamwork Style looks.

The Seamwork team sewed beachwear! We show off our handmade swimsuits in this month’s Staff Makes.

Swim in your underwear! Learn how to hack lingerie patterns into swimsuits.

The member bonus variation for the Crosby suit features a scoop neckline and eliminates the shirring at the side seams to create a sleek, beginner friendly swimsuit. Like the original Crosby pattern, it also features a shelf bra, optional foam cups, and convertible straps for support.

Shop for Fabric

Before you shop for swimwear fabric, read this article and we’ll teach you everything you need to know.

Love the samples in this month’s issue? We worked with Jess over at La Mercerie to bring you the latest and greatest in swimwear fabrics. She sourced a bunch of really stylish prints, stripes, and solids this season, and they are likely to sell out quick.

Her shop also has some handy swimwear accessories, like S-hooks for your straps, swimwear lining, and rubber elastic.

Head over to her shop to see the entire swimwear collection!

Get the Perfect Fit

Crosby pattern details

Sizes 0 – 16

About the fit

The Crosby swimsuit has negative ease throughout the bust, waist, and hips.

Sizes 18 – 26

About the fit

The Crosby swimsuit has negative ease throughout the bust, waist, and hips.


Download new patterns each month starting at $5.83

Use the techniques and ideas featured in each month’s issue to create these and other quick & lovely projects.

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