How to Draft and Sew a Circle Skirt with Neoprene Fabric – Complete Step-by-Step Guide

Introduction

In this tutorial, ZMAKER Crystal demonstrates how to draft a custom full circle skirt pattern from scratch and sew it using Big Z Fabric's neoprene fabric. Rather than relying on a commercial pattern, the tutorial teaches how to calculate the correct waist radius based on individual body measurements, allowing you to create a skirt in virtually any length—from mini to maxi.

The project covers the complete process, including taking measurements, drafting the pattern, cutting the fabric, assembling the skirt, finishing the waist and hem with bias binding, and installing an invisible zipper.

Materials Needed

Gather the following supplies before beginning:

Fabrics

• 1 yard of Big Z Fabric Neoprene
• Bias binding (for the waistline and hem)

Patternmaking Supplies

• Tracing paper
• Tape
• Measuring tape
• Pencil
• Marker (optional, for easier visibility)
• Sticky notes (for recording measurements)
• Paper scissors

Sewing Supplies

• Fabric scissors
• Sewing machine
• Matching thread
• Invisible zipper
• Invisible zipper foot (recommended)

Step 1: Prepare the Pattern Paper

Create a large drafting surface by taping together multiple sheets of tracing paper.

The finished sheet should be approximately:

• 40 inches wide
• 60 inches long

Fold the tracing paper in half lengthwise.

The folded edge represents the center of the circle and serves as the starting point for drafting the skirt.

Step 2: Take Your Waist Measurement

Measure your natural waist using a measuring tape.

Before calculating the pattern, adjust the measurement as follows:

• Add seam allowance for both side seams.
• In this demonstration, two inches are added to account for both seams.
• Because neoprene has some stretch, subtract one inch from the total measurement.

Example

• Original waist: 24 inches
• Add seam allowances: 28 inches
• Subtract one inch for stretch: 27 inches

Record this adjusted measurement, as it will be used to determine the waist radius.

Step 3: Calculate the Waist Radius

To draft a full circle skirt, convert the adjusted waist measurement into a radius measurement.

The instructor uses the radius chart found in Patternmaking for Fashion Design by Helen Joseph Armstrong.

If you do not own the book, similar radius charts are widely available online by searching for:

• Circle skirt radius chart
• Full circle skirt radius calculator

Using the adjusted waist measurement, locate the corresponding radius value.

Example

For an adjusted waist measurement of 27 inches, the radius is:

4⅜ inches

This measurement determines the size of the waist opening.

Step 4: Draft the Waistline

Place the measuring tape at the folded corner of the tracing paper.

Measure outward using the calculated radius measurement.

Mark several points while keeping the tape anchored at the corner.

Continue rotating around the corner until enough points have been marked to create a smooth curve.

Connect all of the marks to form the waistline.

This curved line becomes the inside edge of the skirt.

Step 5: Draft the Skirt Length

Choose the finished length of the skirt.

Measure from the waistline—not from the corner of the paper.

For this tutorial, the instructor chooses:

16 inches

This creates a shorter circle skirt.

To make a longer skirt, simply increase this measurement.

For example:

• 16 inches = Mini skirt
• 28 inches = Longer skirt

Mark the desired length all the way around the waist curve.

Connect the marks to create the outer hemline.

Step 6: Cut the Pattern

Using paper scissors, cut:

• The waistline
• The outer hemline

Unfold the tracing paper.

The finished pattern forms a complete circle skirt section.

Step 7: Cut the Fabric

Lay the neoprene fabric flat.

Position the pattern pieces on the bias of the fabric.

Cut:

• Two skirt panels

Cutting on the bias allows the skirt to drape evenly and maintain the proper circular shape.

Step 8: Sew the Side Seams

Place both skirt panels right sides together.

Sew one side seam completely from the waist to the hem.

Leave the second side open temporarily so the zipper can be installed later.

Step 9: Finish the Waistline with Bias Binding

Before installing the zipper, finish the raw waist edge.

Place the waistline inside the folded bias binding so the fabric edge is fully enclosed.

Sew through all layers using a zigzag stitch.

The zigzag stitch is recommended because neoprene has some stretch and the stitch allows the waistband to retain flexibility.

The finished waistband has a clean, professional appearance without requiring a separate waistband piece.

Step 10: Finish the Hem

Apply bias binding around the entire bottom edge of the skirt using the same method as the waistband.

Instead of folding and hemming the neoprene, the bias binding provides a neat finished edge while preserving the shape and drape of the circle skirt.

Sew completely around the hem using a zigzag stitch.

Step 11: Install the Invisible Zipper

Insert the invisible zipper into the remaining open side seam.

Align the zipper carefully with both sides of the waistline before sewing.

Using an invisible zipper foot if available, sew each side of the zipper into place.

Once the zipper has been attached, close the remaining side seam beneath the zipper using a straight stitch.

Backstitch at both the beginning and end of the seam for added durability.

Final Assembly

With the zipper installed and the remaining seam completed, the circle skirt is finished.

Give the skirt a final inspection to ensure:

• The waistband lies flat.
• The zipper opens and closes smoothly.
• Both side seams align correctly.
• The bias binding is securely attached around the waist and hem.

The finished skirt is ready to wear.

Tips from the Instructor

• Record all measurements before beginning the pattern.
• Add seam allowance before calculating the waist radius.
• Subtract a small amount from the waist measurement when working with stretchy fabrics like neoprene.
• Use a circle skirt radius chart to simplify drafting.
• Always measure skirt length from the waistline rather than the paper corner.
• Cut the skirt on the bias for proper drape.
• Finish the waist and hem with bias binding instead of folding the neoprene.
• Use a zigzag stitch anywhere flexibility is needed.
• Install the invisible zipper after finishing the waist and hem for easier construction.
• Backstitch all permanent seams to improve durability.

Final Result

Following these steps produces a custom-drafted full circle skirt made from neoprene fabric with a clean bias-bound waistband, neatly finished hem, and invisible zipper closure. Because the pattern is drafted from personal measurements, the skirt can easily be customized to any waist size or desired length, making it a versatile project suitable for beginners learning pattern drafting as well as experienced sewists looking to create a polished, made-to-measure garment.