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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 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 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.
Fabric and Fit
Fabric Recommendations
Cassis is designed for light to medium weight woven fabrics that highlight its clean lines and tailored construction. Linen and chambray create an effortless everyday top with subtle texture, while poplin, shirting, and quilting cottons lend the design a crisp, classic feel.
For a more structured interpretation, try denim, twill, suiting, or fine wale corduroy. These fabrics emphasize the top's architectural seams and refined silhouette, making Cassis an ideal layering piece for cooler months.
If you're looking for something softer and more romantic, batiste, lawn, clip dot, eyelet, and seersucker showcase the feminine details beautifully. Pair your main fabric with a lightweight lining such as cotton lawn, rayon, acetate, or silk for a smooth, comfortable finish that feels as polished on the inside as it looks on the outside.
Because Cassis is such a versatile wardrobe builder, fabric choice has a dramatic impact on its personality—from relaxed and casual to tailored and sophisticated.
Fitting Tips
Cassis is designed with a close-fitting bodice, so achieving a comfortable fit through the bust is the best place to start. The armhole princess seams make it easy to customize shaping, whether you need a full or small bust adjustment or simply want to refine the fit through the torso.
You may also wish to adjust the body length to suit your proportions and preferred styling. For more guidance, check out our tutorials.
- Understanding ease will help you pick the right size or sizes. This tutorial will teach you all about design and wearing ease.
- Follow this tutorial to lengthen and shorten a sewing pattern.
- If you need to adjust the armhole depth, use this tutorial.
- If you want to blend between sizes, use this video tutorial.
- To adjust the shoulder slope, follow this tutorial.
- Here are tutorials for wide or narrow shoulder adjustments.
- Here are tutorials for small bust adjustments and full bust adjustments.
