Boys Underwear 18" Doll Clothes Pattern

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This design for tidy and great-fitting Boys Underwear for modern doll characters look great under clothes and are fun to make. This pattern includes detailed instruction and accompanying pattern pieces to create a variety of Boxer Briefs and Standard Briefs. Using stretch knits -just like in real underwear- and elastic, create a super realistic pair of undies for your boy dolls that fit well enough to be worn under clothes. Best of all, scraps of knits, old t-shirts, and bits of elastic can make this a very economical project.

Pull on style, elastic waist, sewn flat for simplicity. Boxer style can have a hemmed leg opening or a banded hem. Pattern has options for lower waistline and leg length (inseam) variations. Shown with alternate decorative stitching on top of seams.

This PDF sewing pattern by Dollhouse Designs is designed to fit 18 inch dolls such as American Girl®.  

Recommended Fabrics: Light to Medium-weight Stretch Knit fabric or remnant. An old t-shirt or new pack of kids underwear can be used for material.


Supplies Needed:

  • Fabric Both Views – 1/4 yard Light to Medium-weight Stretch Knit fabric, remnant or t-shirt.  This pattern is sized to fit only with the use of stretchy knit fabrics.
  • View A option only: Remnant or 1/8 yard Lightweight ribknit for leg bands. Very stretchy knit fabric can be substituted.
  • Elastic – 10 1/2” of 1/2" Knit Elastic for waist. Can use up to 3/4” width knit elastic. (This is the soft flexible waistband fabric found at fabric stores) Woven elastic can also be used but is slightly less flexible and a little thicker.
  • Bias Tape – 1/4" Double-fold Bias Tape - Can be used for topstitching over front “fly” seam on both views.
  • View A only – (Optional) 10 x 5” remnant of rib knit fabric for leg openings.
  • View B only – 1/4" Knit or narrow Fold Over Elastic – 21” of 1/4-inch narrow knit elastic OR Fold Over Elastic in narrow width for leg openings and front panel.


Skill Level:  Intermediate


What You Get: One 38 page sewing pattern that you digitally download as a PDF file so you can start your project immediately! The PDF sewing pattern provides full color step-by-step illustrated instructions and full size pattern pieces. A PDF reader is required to view and print the files (example: Adobe Reader or Preview for MAC). The download link is received immediately after the transaction is complete. Print copies are NOT available.

Download, Print, Sew!

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For detailed information and answers to the most common questions, be sure to read the Terms of Use and FAQ's related to the doll clothes patterns sold at Pixie Faire.

Pixie Faire and the designers featured are not affiliated with American Girl®.

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