18‑Inch Doll A-Line Dress with an Inverted Box Pleat at the Center Front--Free PDF Sewing Pattern + Sewing Tutorial

 

There’s something timeless about an A‑line dress with a crisp inverted pleat—clean lines, a little swing, and just enough structure to feel “special.” This tutorial walks you through sewing a simple, sleeveless A‑line dress with an inverted front pleat for 18‑inch dolls (such as American Girl®), including fabric requirements, free PDF sewing pattern, and step‑by‑step instructions.

You’re welcome to use this pattern for personal sewing and gifts.

Fabric requirements

For one sleeveless A‑line dress (18‑inch doll):

• Main fabric:

  • Amount: ⅓ yard (30 cm) of 44/45" wide woven

• Closure:

  • Option 1: 4–5 small sew‑on snaps

  • Option 2: 4–5" strip of hook‑and‑loop tape

• Notions & tools:

  • Thread: All‑purpose polyester or cotton

  • Marking tools: Fabric pen/chalk

  • Pins or clips

  • Iron & pressing surface

  • Paper & printer (to print the PDF pattern once you lay it out)

Fabric suggestions

For a neat inverted pleat and crisp A‑line shape, choose light to medium‑weight woven fabrics:

• Best choices:

  • Quilting cotton

  • Cotton poplin

  • Cotton lawn or voile (for a softer drape)

• Also suitable:

  • Lightweight linen or linen‑blend

  • Cotton sateen (for a slightly dressier look)

• Avoid:

  • Stretch knits, jersey, heavy denim, thick canvas—these will distort the pleat or feel bulky on a small doll.

You can use a contrast fabric for the pleat underlay or the neckline facing to add a little surprise when the pleat opens.

Free PDF sewing pattern

A-Line Dress with an Inverted Box Pleat at the Center Front for 18‑Inch Dolls

Step‑by‑step sewing tutorial

Step 1: Cut the paper pattern pieces out from the pattern pdf pages

Step 2: Cut out the pattern pieces from the fabric.

Using the paper pattern template, cut out the pattern pieces from the fabric. 

You need to cut:

1 front piece on fold

2 back pieces

And a few strips of fabric (1 inch wide) for making the bias tape to finish the raw edges of the neckline and armhole. 

Step 3: Prepare the inverted front pleat

Mark the pleat lines

Transfer the markings for center front and lines A1 and A2 from the pattern for the left and right sides.

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     On the frontpiece, mark the center front. Fold the pleats. Fold and press the A1 pleat lines on the right (or good) side of the fabric.
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   Fold and press the A2 pleat lines on the wrong side of the fabric.

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     With all the pleats folded and pressed, it should look like this:

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   • Now, bring the outer pleat line (A1 pleat line) toward the center front line so the fabric folds under itself. Pin the fold in place.

     
     
     
     
     
     
     
     
     
     

   • Press the folds sharply with an iron.

3. Secure the pleat at the top

   • Stitch across the top of the pleat within the seam allowance (about ¼" from the raw edge) to hold it in place.

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   • Optionally, baste down the pleat for 1–1½" from the waist to keep it crisp while you sew.

Step 4: Serge the raw shoulder seams and side seams

Step 5: Join shoulder seams

• Place front bodice and back bodice pieces right sides together.

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• Sew the shoulder seams with a ¼" seam allowance.

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• Open the seams and press.

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Step 7: Armholes

Measure the armhole curve. Take a bias strip that is a few inches longer than the armhole curve. Fold the bias tape in half.

With right sides together, pin the bias tape to the armhole curve, leaving a little extra tape extending beyond each end of the armhole.

Sew the bias strip to the armhole using a 1/4 inch seam allowance.
 

Trim the extra fabric from the bias strip. Don't fold the bias strip down the wrong side yet.

Step 6: Side seams

• With right sides together, sew the side seams of the bodice using a 1/2 inch seam allowance.

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  Now fold the bias tape to the wrong side and hem it in place. I hemmed it by hand for a neat finish. Also, it is easier to sew by hand than by using the sewing machine, as the armhole round is small.
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Step 8: Fold the button plackets at the back

Turn under ¼" along each center back edge; press.

Turn under another ¼" and stitch to create a neat placket. Press well.

Now turn the folds to the right side and press well.

Step 9: Sew the neckline

Measure around the neckline. Take a bias strip that is equal to the this measurement. Fold the bias tape in half.

With right sides together, sew the bias tape to the neckline using a 1/4 inch seam allowance.

Turn the bias strip to the wrong side and hem it in place. As you turn the strip, fold the placket ends at both sides of the neckline. Use a blunt tool to gently push out the corners for a crisp finish.

Sew along folded edges of the blacket folds that are turned down the wrong side.

Step 10: Hem the dress

Turn up hem

Fold ¼" at the bottom edge of the skirt to the wrong side; press.

Fold another ¼" and stitch closer to the folded edge.

Step 11: Add closure

Hook‑and‑loop:

Sew one side to the inside of the left back, the other side to the outside of the right back.

Snaps:

Sew 4–5 small snaps evenly spaced from neckline to the hemline.

Step 12: Final press

Press the inverted pleat so it lies flat and crisp.

Give the whole dress a gentle press for a polished finish.

Optional design variations

• Add Collars

• Sew decorative buttons

• Decorative topstitching:

  • Add a line of stitching down each pleat fold for a tailored look.

• Trim at hem or neckline:

• Add lace, rickrack, or piping for a vintage feel.

I sewed on three silver-colored buttons to give the dress a polished look. Now gthe dress is ready!

  

Happy sewing!

--Flora