How to Sew an A-Line Dress Without a Pattern in 4 Simple Steps

9 Materials
3 Hours

Want to learn how to sew an A-line dress? I have this super-easy tutorial for you! This is an excellent project for beginners and anyone who wants to make a DIY A-line dress.

I’m so excited to show you all the steps, and just wait until you see the results! Let’s get started.

Tools and materials:

  • Fabric
  • Sewing machine
  • Scissors
  • Matching thread
  • Elastic
  • Measuring tape
  • Ruler
  • Chalk
  • Pins
Folding the fabric into a square

1. Make the DIY A-line dress pattern

Fold your fabric in half into a 43” square. 

Fold the corner to make a triangle

Align the opposite corners to make a triangle. 

Measuring 9 inches inwards

Smooth out the fabric and measure 9” from the side. 

Measuring 3 inches down

Then, measure 3” down and make a mark. 

Measuring and marking the A-line dress pattern

From that 3” mark, measure 0.8” toward the end and make a mark. 

Connecting the marks with a curve

Connect the 0.8” point to the 3” line with a curve. You should have a mini curved triangle. This will be the neckline.

How to draft an A-line dress pattern

Measure 3.5” from the 0.8” mark. 

Measuring the pattern with a ruler

Then, measure and mark 7.5” down, along the side of the triangle. 

Connecting the points with a half-curve

Connect both points with a half-curve line, as shown. This will be the armhole.

How to make a DIY A=line dress pattern

Measure and mark 6” outward from the last point. 

Making the pattern

Then, 20” down toward the bottom point. 

Drawing the pattern

How to measure the length of the skirt

From the tip, measure 43” across and make a mark. Then, mark the same at different angles, down the fabric until you reach the bottom point. 

Connecting markings together

Then, draw a line from the bottom point to connect these markings. 

Cutting out the pattern

2. Cut the fabric

Finally, cut out your DIY A-line pattern. Remember, because we worked on four layers, you’ll have two main pieces.

Amending the neckline

To amend the front piece’s neckline, simply measure 2.7” down from the centerfold. 

Cutting out the neckline

Then, curve the line from the top and cut. 

Cutting around the armhole

Cut around the armhole area to smoothen out the curve. 

DIY A-line dress pattern

This is what you should have.

Creating pleats in the DIY A-line dress

3. Create pleats & ruffles

The DIY A-line dress is pretty big if we leave it as is. So, let’s create some pleats. Measure 20” up from the bottom in three increments, as shown. 

Connecting the marks to make pleats

Connect the marks on top with a curved line. 

Adding an elastic to the dress waist

Next, cut a 12” elastic. We will be sewing it to this line to ruffle the DIY A-line dress. 

Sewing the elastic along the waist

Sew the elastic along the curved line, stretching it as you go along. Be sure to sew through one layer and not two. Then, repeat for the second piece. 

How to make an A-line dress

Sewing the shoulder seams

4. Sew the DIY A-line dress

Layer the front and back pieces, right sides facing, and sew one of the shoulder seams. Be careful not to sew the armhole areas. 

Hemming the neckline

Hem the neckline area with a single fold. 

Sewing the other shoulder seam

Then, sew the other shoulder seam. 

Hemming the armholes

Before sewing the side seams, be sure to hem the armholes. 

Sewing the side seams

Now, go ahead and sew the sides.

Hemming the bottom of the dress

You’re almost done! You just need to hem the bottom of this exquisite DIY A-line dress, and you are good to go! 

DIY A-line dress

How to sew an A-line dress

How to sew an A-line dress

See? That’s how to sew an A-line dress easily! There’s really nothing to it, just a few measurements and placing the elastic in the right area!

I’m sure you will agree that this DIY A-line dress is so flowy and chic, perfect for lunch dates or even for the office. Thanks for joining me, and I hope you have fun doing this project. 

To see more of my DIY sewing tutorials, follow me on TikTok  @tugbaisler.

Suggested materials:
  • Fabric
  • Sewing machine
  • Scissors
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