This free sewing pattern is for a wide round-neck short-sleeve T-shirt, perfect for both casual wear and cosplay costumes. Designed for knit fabrics or 2-way stretch materials, it offers comfort, ease of movement, and a stylish open neckline. Seam allowances are already included, so you can cut and sew immediately.
Just like basic crew-neck or V-neck T-shirts, wide round-neck patterns are surprisingly difficult to find—especially for cosplay projects where an exact neckline shape is needed. This pattern is ideal for creating a relaxed, open-neck style that works well for stage costumes, casual outfits, or custom printed T-shirts.
The included version is short-sleeved, but you can easily extend the sleeve length to make a long-sleeve version for cooler weather or specific costume designs. The wide round neckline also layers beautifully with jackets, cardigans, or dresses.
Beginner-friendly and quick to sew, this project is great for first-time makers as well as experienced sewists. After printing, simply align the pages along the matching lines, tape them together, and cut out your fabric pieces to begin sewing.
The production process is explained with translation software.
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What is "Grainline""cut on fold"? Please refer to this page
(1) Sew shoulder-seams and side-seams of the "Front Body" and "Front Body" together, on a regular sewing machine. Serge/overlock and iron.
How to Serge/overlock (sewing machine & overlock sewing machine). Please refer to this page
(2) Sew the sides of the "sleeve" together (so you get 2 tubes) on a regular sewing machine. Serge/overlock and iron
How to sew sleeves and sleeve cuffs. Please refer to this page
(3) Serge/overlock the "Body" hem and "sleeve" hem so the fabric doesn’t fray. Fold the hem 0.5 inch (≈1cm) inward and sew with a sewing machine.Serging the body hem and sleeve hem, fold inward 0.5 inch and sew with a sewing machine.
(4) Sew the "sleeve" to the "Body" and serge/overlock the armholes.
(5) Sew the "Neck" part into a loop.
(6) Fold the "Neck" part in half and sew onto the "Body" using a sewing machine.
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Children's-100
shoulder width26cm bust62.5cm 5sheets of A4 size (or legal size)
Children's-4
5sheets of letter size
Children's-120
shoulder width30cm bust71cm 5sheets of A4 size (or legal size)
Children's-8
6sheets of letter size
Children's-140
shoulder width34cm bust78.5cm 7sheets of A4 size (or legal size)
Children's-10
7sheets of letter size
Ladies'-S
shoulder width39cm bust85cm 7sheets of A4 size (or legal size)
Ladies'-S
8sheets of letter size
Ladies'-M
shoulder width40cm bust92cm 9sheets of A4 size (or legal size)
Ladies'-M
9sheets of letter size
Ladies'-L
shoulder width41cm bust100cm 9sheets of A4 size (or legal size)
Ladies'-L
11sheets of letter size
Ladies'-LL
shoulder width42cm bust105.5cm 10sheets of A4 size (or legal size)
Ladies'-LL
11sheets of letter size
Men's-S
shoulder width43cm bust89cm 9sheets of A4 size (or legal size)
Men's-S
9sheets of letter size
Men's-M
shoulder width44cm bust101cm 10sheets of A4 size (or legal size)
Men's-M
11sheets of letter size
Men's-L
shoulder width45cm bust109cm 11sheets of A4 size (or legal size)
Men's-L
12sheets of letter size
Men's-LL
shoulder width46cm bust115cm 13sheets of A4 size (or legal size)
Men's-LL
13sheets of letter size
Paper pattern & how to make
How to use Paper pattern
Each process How to make
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