One piece dress Sewing Patterns | DRCOS Patterns & How To Make

One piece dress Sewing Patterns (This pattern is free.)

Onepiece dress Free sewing patterns & how to make

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This is a free sewing pattern for a long-sleeve fitted dress with side darts and waist darts, designed to create a clean, flattering silhouette. The pattern is slightly relaxed in fit, making it versatile for various projects such as everyday wear, stage costumes, or cosplay outfits. For a more tailored look—especially for cosplay—it is recommended to take in the pattern slightly at the waist or sides.

The dress features classic dart shaping, which enhances body contours while maintaining comfort. You can also modify the neckline, sleeve length, or skirt shape to match your design vision. The pattern comes with a built-in seam allowance (S/A) for convenience, so you can start cutting and sewing immediately after printing. Simply align the joining lines on the printed sheets, cut along the outlines, and you are ready to sew.

This pattern is ideal for intermediate beginners who want to try dressmaking with darts, as well as for experienced sewists seeking a solid base pattern to customize for different styles. Perfect for handmade fashion, school cultural festival costumes, and creative projects that require a fitted dress foundation.

Sleeve part description icon

  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts
  • Clip art of sleeve parts

How to make

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(1) Sew the darts on the "Front Body" and "Back Body" and iron them down.

(2) Serging the shoulders and sides of "Front Body" and "Back Body" and the sides of "sleeve".

(3) Sew the shoulders, sides, back center, and sleeve sides together, and attach the anti-stretch tape to the back center of the "Back Body".

(4) Press seam allowances open with an iron.

(5) Serging the hem of "Body" and "sleeve", fold back 0.5 inch, and sew with a sewing machine.

(6) Sew on the invisible zip.

(7) Apply fusible interlining to the "facing" and Serging only on the outside.

(8) Sew "Facing" to "Body".

(9) Serging armholes after sewing "sleeve" on "Body".

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Children's-100
shoulder width26cm bust60cm waist52.5cm sleeve length32cm dress length59.5cm 8sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Children's-4
shoulder width10.2in bust23.6in waist20.6in sleeve length12.5in dress length23.4in 9sheets of letter size
Onepiece dress Free sewing patterns & how to make


Children's-120
shoulder width30cm bust67cm waist58cm sleeve length39cm dress length68.5cm 11sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Children's-8
shoulder width11.8in bust26.3in waist22.8in sleeve length15.3in dress length26.9in 10sheets of letter size
Onepiece dress Free sewing patterns & how to make


Children's-140
shoulder width34cm bust77cm waist67.5cm sleeve length47cm dress length80.5cm 13sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Children's-10
shoulder width13.3in bust30.3in waist26.5in sleeve length18.5in dress length31.6in 13sheets of letter size
Onepiece dress Free sewing patterns & how to make


Ladies'-S
shoulder width39cm bust87cm waist75.5cm sleeve length62cm dress length86.5cm 15sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Ladies'-S
shoulder width15.3in bust34.2in waist29.7in sleeve length24.4in dress length34in 16sheets of letter size
Onepiece dress Free sewing patterns & how to make


Ladies'-M
shoulder width40cm bust94cm waist81.5cm sleeve length63cm dress length91cm 18sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Ladies'-M
shoulder width15.7in bust37in waist32in sleeve length24.8in dress length35.8in 18sheets of letter size
Onepiece dress Free sewing patterns & how to make


Ladies'-L
shoulder width41cm bust102cm waist89cm sleeve length63.5cm dress length94cm 18sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Ladies'-L
shoulder width16.1in bust40.1in waist35in sleeve length25in dress length37in 18sheets of letter size
Onepiece dress Free sewing patterns & how to make


Ladies'-LL
shoulder width42cm bust108cm waist93.5cm sleeve length64cm dress length96.5cm 19sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Ladies'-LL
shoulder width16.5in bust42.5in waist36.8in sleeve length25.1in dress length37.9in 21sheets of letter size
Onepiece dress Free sewing patterns & how to make


Men's-L
shoulder width17.7in shoulder width45cm bust112cm waist98.5cm sleeve length65cm dress length98.5cm 21sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Men's-L
shoulder width17.7in bust44in waist38.7in sleeve length25.5in dress length38.7in 22sheets of letter size
Onepiece dress Free sewing patterns & how to make


Men's-LL
shoulder width46cm bust116cm waist101.5cm sleeve length66.5cm dress length100cm 21sheets of A4 size (or legal size)
Onepiece dress Free sewing patterns & how to make
fabric needed cutting diagram button icon
detail size button icon

Men's-LL
shoulder width18.1in bust45.6in waist39.9in sleeve length26.1in dress length39.3in 24sheets of letter size
Onepiece dress Free sewing patterns & how to make

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