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Cassis Sleeveless Button-Front Top PDF Sewing Pattern

Number: 3281

Skill Level: Advanced Beginner
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Skill Level Guide

We created our skill levels according to the techniques required to sew each pattern, but our patterns will teach you everything so don't be afraid to sew above your skill level!

Beginner

Beginner sewing patterns teach the most foundational sewing techniques. These patterns focus on the basics like sewing and finishing straight and curved seams, hemming, and simple shaping methods such as darts and gathers. In addition, beginner patterns omit closures, making them perfect if you are new to sewing or are looking for a quick and easy make.

Advanced Beginner

Advanced Beginner sewing patterns expand on the skills learned at the beginner level, helping you to build confidence and range as a sewer. You'll find simple knitwear projects, bias tape finishing techniques, and begin to explore closures at this skill level.

Intermediate

Intermediate level sewing patterns focus on more precision sewing. In this skill level, you'll learn specialty closures. Intermediate patterns also introduce the skills needed for simple lingerie and athletic wear projects.

Advanced

Advanced sewing patterns require great precision and time investment. You'll find tailored pieces in this category with elevated details like bound buttonholes and welt pockets.

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  • Description

    Sleeveless Button-Front Top

    Cassis is a fitted sleeveless top with refined, vintage-inspired lines and a flattering, tailored fit. Designed to skim the body, it’s an easy piece to dress up or down—equally at home paired with relaxed denim, tailored shorts, or a flowing skirt.

    The rounded square neckline and softly scooped back create an elegant, timeless silhouette. Armhole princess seams shape the front bodice for a close, comfortable fit, while paneled back seams create beautiful lines from every angle. A button-front closure and fully lined construction give Cassis a polished finish inside and out.

    Whether sewn in crisp linen, classic shirting, or a romantic floral print, Cassis complements everything from tailored separates to flowing skirts, making it a piece you'll style in countless ways.

    Shannon is wearing a Cassis sewn in a cotton lawn.

    Crosby is wearing a Cassis sewn in a cotton Swiss dot.

  • Fabric & Supplies

    Lightweight to medium weight woven fabrics such as linen, chambray, denim, twill, suitings, corduroy, batiste, lawn, clip dot, eyelet, seersucker, poplin, quilting cottons, and shirting.

    Lightweight woven linings such as cotton lawn, acetate, rayon, or silk.

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    All-purpose polyester sewing thread, all-purpose sewing machine needle, 1/4 yard (.25 meters) fusible interfacing, and six 1/2” (13 mm) buttons.

    Refer to size chart for amount of fabric needed for your size.

    00 – 30

  • Sizing & Fit

    Shannon is wearing the Cassis top in a size 6 from our 00 - 18 size range. We graded to an 8 at the waist and shortened the body length 1/2". Her measurements are bust: 36" (91.4 cm), waist: 29" (73.7 cm), hip: 36" (91.4 cm), and she is 5' 4" (162.6 cm) tall.

    Crosby is wearing the Cassis top in a size 18 from our 12 - 30 size range. We added 3/4" to the bust and added 3/4" to the body length. Her measurements are bust: 48 1/4" (122.5 cm), waist: 38 1/2" (97.8 cm), hip: 49" (124.5 cm), and she is 5'10" (177.8 cm) tall.

    00 – 30

    Sizes 00-18 (Misses) are drafted for a C cup. Our size 8 fit model is 5’8”. Sizes 12-30 (Curvy) are drafted for a DD cup. Our size 20 fit model is 5’9”. Learn more about our sizing here

    We want to help you achieve the best fit possible so you can sew garments you truly love. 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.

  • Details

    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 like.

    Our pattern PDFs are layered for easier printing.

    Print-at-home files, copy shop files, projector files, and instructions. See contents file in download for detailed descriptions.

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— Robin W. Member since 2020

“Seamwork has changed my life in profound ways. I am doing something for me and it’s how I express myself and that translates into my other relationships outside of sewing. It’s been a profoundly nurturing experience.”

— Nicci N. Member since 2021

“I love the community. Everyone is excited about sewing together and sharing the cool things they sew. It's nonjudgmental. We pat each other on the back and are funny about the mistakes we’ve made.”

— Lauren K. Member since 2020

“I found Seamwork and I just fell in love with it. I like the fact that I can choose whatever project I want and they are all staples. It’s actually things that I wear all the time.”

— Luxsiana R. Member since 2017

“I’m on Instagram, but Seamwork has a different feel to it. Seamwork feels more collaborative and friendly. People are so encouraging about each other's projects. I really like that.”

— Paula B. Member since 2021

“I cannot describe how wonderful it is to have access to patterns, hacks, tutorials and sew alongs to peruse when I want to create a new item. And the community lets me know I am not alone!”

— Carol M. Member since 2021

“It's a really supportive community. Almost everything is positive, people are nice, accepting, and provide encouragement to others.”

— Robin W. Member since 2020

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