
Keep reading for the Free Boy’s Swimsuit Pattern and Tutorial.
1. Print the Free Boy’s Swimsuit Pattern . Tape the two pieces together and cut out. The pattern includes a 1/4″ seam allowance.

2. Cut 2 (opposite) pieces of the pattern from a Lycra or Spandex blend, or like I did here, a light double-knit.

3. Fold both pieces in half with right-side-facing (inside.)

4. Sew or serge the inseam of both pieces. Here is our very helpful guide to How to Sew Knits: Sewing Jersey 101 if you are sewing.

5. Reverse one of the pieces inside the other with the in-seams lined up.

6. Serge or sew the crotch. I’ve been writing that in tutorials for 4 years and it still feels wrong.

7. I finished the leg holes and waist with the serger but you can do a double seam or leave raw depending on the fabric.

8. Fold the waist inside with a 1/2″ seam and sew, leaving space to run 1/4″ elastic thru the casing. I used the Stretch Stitch on my machine but again, here is our very helpful guide to How to Sew Knits: Sewing Jersey 101 which provides additional options.

9. Attach a safety pin to the end of the elastic and run through the casing. The elastic should lay flat with the fabric un-gathered.

10. Sew the ends of the elastic together with several reinforcing front and back stitches.

11. Close up the elastic hole in the casing.
12. Hem the legs. Again, I used the stretch stitch.

13. Cut a length of parachute cord (or similar) to tie a bow. Sew at the center with several securing stitches.

And hit the kiddie pool ’cause all the little old ladies are about to swoon.



