THE ASSEMBLY LINE • Puff Shirt Sewing Pattern (XS - 3XL)
Printed sewing pattern • Sizes XS–3XL • Skill level: Beginner
The Puff Shirt Sewing Pattern by The Assembly Line is a modern blouse with a sculptural silhouette, combining clean lines with soft volume. Designed in Sweden, this style offers a fresh, contemporary take on a classic shirt, making it a versatile addition to a handmade wardrobe.
The design features a distinctive shoulder overlap detail that creates subtle structure through the upper body, balanced by wide, voluminous sleeves gathered neatly into elasticated cuffs. The result is a blouse that feels both statement-led and easy to wear, with a shape that works beautifully across a range of fabrics.
This top pairs effortlessly with the High Waisted Trousers by The Assembly Line, creating a balanced silhouette that feels modern and wearable.
Perfect for:
- Modern blouses with volume and structure
- Beginner sewists looking for a stylish, wearable project
- Building a contemporary handmade wardrobe
Skill level • Beginner
Pattern details:
- Printed sewing pattern with clear, step-by-step instructions
- Sizes XS–3XL
- Modern blouse with sculptural silhouette
Suggested fabrics: This pattern works well in light to midweight woven fabrics such as:
- Cotton poplin
- Voile
- Linen and linen blends
- Tencel
Fabric choice will influence the final look — crisp cottons create a more structured silhouette, while softer fabrics enhance the fluidity of the sleeves.
Fabric requirements • Please see last image for fabric requirements.
You will also need:
- Matching thread
- 0.3m interfacing
- 50mm Wide elastic, see last image for requirements
Sewing tips:
- Choose fabric carefully depending on your desired silhouette — structured for shape, soft for drape
- Take care when constructing the shoulder detail for a clean finish
- Evenly distribute gathers at the cuffs for a balanced look
Why we recommend this pattern: The Puff Shirt is a beautifully modern blouse that combines simplicity with subtle statement details. It’s an easy sew that delivers a distinctive, wearable result.
Browse our full collection of sewing patterns for modern handmade wardrobes.

