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with Beverly Johnson
Online Class

Sewing Swimsuits: The Supportive One-Piece

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Learn how to sew a one-piece swimsuit that's comfortable and flattering with sewing expert Beverly Johnson. You'll begin by discovering how to choose your pattern and fabric before making custom length and width adjustments. Beverly will show you how to construct a supportive bust with pre-formed foam cups or a built-in bra. You'll even learn how to adapt your own bra pattern for your swimsuit if you choose the built-in bra option. Next, you'll pull your suit pieces and lining together and create flattering curves whether you sew a suit with princess seams or a tank-style (maillot) design. Beverly will also help you modify the leg curve to suit your shape and add elastic to leg openings, neckline and armholes. Then, find out how to insert a built-in bra and finish your one-piece. Finally, Beverly will show you how to use stylish color-blocking designs in your swimwear and troubleshoot common fit issues.


  • intermediate
  • 6 episodes
  • 2h38m

Included in this Class

1. Fit & Fabric

1. Fit & Fabric

Meet swimwear sewing expert Beverly Johnson! You'll begin class by taking four key measurements, choosing a pattern for your one-piece suit, making fit modifications and learning how to draft a bra-style back if desired. Then, you'll see how to choose swimwear fabric and get tips for layout and cutting.

2. Interior Bra With Pre-Formed Cups

2. Interior Bra With Pre-Formed Cups

Pre-formed foam cups are another option for support in your suit. Beverly guides you through choosing foam cup styles, orienting them correctly and stitching them to the basted lining of your suit.

3. Interior Built-In Bra

3. Interior Built-In Bra

For larger busts, the built-in bra option is a fabulous way to get great support. Beverly will explain the best choices for these cups and frames. Then, she'll show you how to adapt your own bra pattern for swimwear and construct the bra for later insertion into your suit.

Recommended with this class

  • Swimwear elastic
  • Swimwear clicker or g-hook for suit with a bra back
  • Foam cups and underwires for foam-cup bra option