No. 3121

$7 or 1 Seamwork Credit |

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Pattern Description

With a chic, relaxed fit and an elasticized waist, Billie is the perfect jumpsuit for style and comfort. It features slightly tapered legs, a faced neckline, inserted pockets, a tie belt, and a keyhole opening at the back.

Sew it up in your choice of knit fabric, like a casual heathered jersey, a soft French terry, or a glamorous stretch velvet.

Seamwork Issue 61


Sizes and Supplies

0 - 26

All-purpose polyester sewing thread, Ballpoint sewing machine needle, Ballpoint twin needle, 1 yard (.9 meters) of 1/2" (13 mm) braided elastic, Small hook and eye, Small safety pin, 1/2 yard (.5 meters) of fusible knit interfacing.

Medium weight knit fabrics with at least 50% stretch, such as ponte, French terry, double knits, sweater fleece, and jerseys.

Imperial Measurement Chart      
Metric Measurement Chart
Download Information

45-58 pages

Pattern Fit

We want to help you achieve the best fit possible so you can sew garments you truly love. That is why we create fit guides for every pattern. Our fit guides are designed to help you better understand the fit and details of each pattern. Use fit guides in conjunction with the finished measurement chart to better understand the ease and intended fit of each pattern.

View Fit Guide

This pattern is a digital download. When you purchase a PDF pattern from Seamwork, your new pattern will be stored in your download library, where you can download it as many times as you need to.


Techniques and customization ideas for your Billie

Simple tips for using your home sewing machine to sew knit fabrics.

This member bonus pattern adds a center front button closure and omits the keyhole.

Learn what makes these fabrics such a joy to sew with and wear.