Tips for Sewing Gathers

Tips for Sewing Gathers // Closet Core Patterns

Today we have a guest writer to the blog! Abby (@toiledunord) is a sewist we’ve known for quite a while. When we put the call out for blog post contributors I noticed her name right away as she’s always showing up in our feed in the cutest Closet Core makes. Go take a look at her IG and spot all the CCP patterns, it’s a fun easter egg hunt. But before you do that, she wrote an awesome blog post on myriad helpful tricks for sewing gathers of all kinds. Our new Pauline dress has both a gathered sleeve and skirt tier so we thought we would start you off right with some handy hints. So take it away Abby…

Hi all! Abby here to talk gathering methods and tips. Gathering is a useful sewing technique that can add both design interest and functionality to a garment. It allows for a longer or wider piece of fabric to be fit to a shorter or narrower piece in a way that creates evenly distributed fullness. Gathering is secured with a stable final seam to keep the fullness in place.

Because this is a versatile technique and can be used in many types of garments and fabrics, there are many options and factors to consider when creating gathers. This post covers Two Thread Basting, Three Thread Basting, and the Zig Zag over a Cord methods of gathering. This was written with woven fabric in mind, but it is definitely possible to gather knit fabrics as well. Some of the process would look the same, but there may be additional factors to consider.

You’ll Need

  • Cut and Marked Pattern Pieces
  • Strong, High Quality Thread
  • Pins
  • Scrap yarn, cording, pearl thread, 6-strand embroidery floss etc. (optional)
  • Hand sewing Needle (optional)


Before sewing gathers in final fabric, read through the techniques and methods shared below and test out some options on scrap fabric with these factors in mind:

Stitch Length: Shorter basting stitch length provides more control over gathering, but a stitch length too short will be hard to pull/gather. Longer basting stitch length provides less control over gathers, but is easier to manipulate.

Fabric Weight: Lighter weight fabrics can generally use a shorter length stitch. Heavier weight fabrics may need a longer stitch to accommodate fabric thickness.

Seam Allowance: Gathering can involve sewing multiple lines of stitching within the seam allowance. If existing seam allowance is small, it may be helpful to increase the seam allowance in gathered areas to allow more room to work.

Thread weight/quality: Pulling on thread, especially over longer sections of gathering (such as an entire skirt) can stress and cause it to break. Use high-quality thread, and consider using a heavier thread if gathering heavier weight fabrics.

Thread Tension: Thread tension can be adjusted to make pulling thread easier. 

Fabric Qualities: Creating gathers requires more fabric handling than regular seams. If working with fabric that frays easily, stabilizing or finishing edges before creating gathers may help mitigate fraying edges. Does the fabric take/hide needle punctures well? Gathering can involve sewing, then removing, stitch lines in what will eventually be a visible part of the garment. If visible holes are left by needle punctures, keep all gathering prep work within the seam allowance

Once happy with the chosen technique and settings, make sure final pattern pieces are prepared. Mark gathering area on both gathered and flat pieces as indicated by pattern with notches, tailor tack, or other marking.

Tips for Sewing Gathers // Closet Core Patterns

If gathering a larger section of fabric, such as an entire skirt, divide both gathered section and flat section into quarters and mark to ensure even gathering if the pattern doesn’t already include them. Use notches or tailor tacks/small stitches.

Tips for Sewing Gathers // Closet Core Patterns

TIP: Triangle notches (as opposed to single snip notches) may be easier to locate once the fabric has been gathered.


There are multiple method options for the actual act of gathering fabric Two thread and three thread gathering methods are quite similar. Both entail sewing lines of basting stitching in or near the seam allowance, pulling on threads to create gathers, then sewing gathers in place. The Zig Zag over Cord method creates gathers in a way similar to a drawstring.

These examples use contrasting thread to more clearly demonstrate the methods. Using contrasting thread in a final garment can also be useful in order to more clearly see basting stitches and be able to remove them. Needle thread is magenta, bobbin thread is blue, and the final seam is sewn in black.

Two Thread Basting

This method used two lines of machine basted stitches to gather the fabric. The basting threads are pulled to create gathers. There are two options for positioning the two lines of basting stitches.

Option One: Sew both lines of basting stitches within the seam allowance. This provides less control over the final gathers, but is easier on the final fabric.

Option Two: Sew one line of basting stitches inside the seam allowance and one line of stitches outside the seam allowance so the final stitch line will fall directly in the middle of the two. A line of basting stitches will be holding the gathers in place on both sides of the final stitch line which gives more control over the final look of the gathering.

This example shows option two, with the final stitch line directly in the middle of the two lines. In this case the seam allowance is 5/8″ and so the first line of basting stitches will be at 3/8″ and the second line of basting stitches will be at 7/8″. (If the seam allowance was 1/2″, the first line of basting stitches could be at 1/4″, the second at 3/4″.)

Fabric right side up, sew first line of basting stitches starting and stopping at your notches, making sure to leave long thread tails at both ends and no backstitching.

Tips for Sewing Gathers // Closet Core Patterns

Right side up, sew second line of basting stitches at determined seam allowance.

Choose either the bobbin threads or the needle threads to pull. Hold both threads together, and pull gently to create gathers, using your fingers to move down the fabric and evenly distribute them. Once either the bobbin or needle threads have been chosen and pulled, do not pull on the other set or the stitches may lock and gathers will become hard to manipulate. If gathering a long section of fabric, it may be helpful to pull on threads from both sides of the gathered area. If gathering a short section, pulling from just one side may be enough. Continue pulling on thread and distributing gathers evenly until the gathered section is the desired/needed width. Check this by either measuring the gathered area or comparing it to the flat fabric it will be sewn to.

Three Thread Basting

This is the same as two thread, but uses a third line of basting stitches for more control. Since sewing three lines of basting stitches takes more room, it may be helpful to add width to the seam allowance. 

Option 1: One basting line at the final seam line, two basting lines within seam allowance.

Option 2: One basting line outside final seam line, two basting lines within seam allowance. 

This example uses a ⅝” seam allowance with the first line of basting stitches is at ¼”, the second at ½”, and the third line of basting stitches at ¾”.

Zig Zag Over A Cord

This method works well for gathering heavier weight fabrics. A sturdy piece of yarn/cord/thread/topstitching thread is run the length of the gathered area, a zig zag stitch is stitched over the cord, and the cord is pulled like a drawstring to create gathers. Zig zag stitch width should be set wider than the cord so it doesn’t get caught in the stitching and the length can be chosen based on how much control over the gathers is desired. Shorter length means more control over gathers/finer gathers, longer length means less control over gathers/larger gathers. Heavier weight fabrics may require a longer length.

To begin, cut a piece of yarn/cord the length of your fabric to be gathered with a few extra inches on each side. Right side up, position the cord so it is within the seam allowance. Sew over the cord using a zig zag stitch. Do not catch the cord in the stitching. Ensure the cord and zig zag stitching remain inside the seam allowance.

Secure one end of the cord by wrapping it in a figure 8 around a pin.

Tips for Sewing Gathers // Closet Core Patterns

Pull on the cord to gather to the desired length.


Once gathered area is the correct length, secure both ends with pin, basting stitch, or knot. To secure with a pin, insert a pin at the end of the gathered area, and wrap the thread tails around the pin in a figure 8 pattern until secure. 

Tips for Sewing Gathers // Closet Core Patterns

To secure with a basting stitch, thread a hand sewing needle with the thread tails and tack in place with a few repeated stitches.

Tips for Sewing Gathers // Closet Core Patterns

To secure with a knot, pull the bobbin threads through to the right side of the fabric, and knot together with the needle threads.

Tips for Sewing Gathers // Closet Core Patterns


Right sides together, pin gathered piece to your flat piece. Line up notches and edges as necessary, and evenly distribute gathers. Gathered fabric up, sew final seam with regular stitch length along seam line.

Remove any gathering stitches that may be visible, either because of their placement or thread colour.

Tips for Sewing Gathers // Closet Core Patterns

Gently press seam away from gathers. Press up to but not over gathers.

Tips for Sewing Gathers // Closet Core Patterns

Once gathered seam is sewn, finish it as desired with bias binding, a zig zag stitch, or serging, then continue with constructing the rest of the garment! Gathering can take more time and attention than just sewing a regular straight seam, but it is worth it for all it can add to a garment!

Do you have any favourite gathering tips to make the process easier and more enjoyable? Tell us in the comments!


Tips for Sewing Gathers
Core Fabrics


Closet Core Patterns

Hi! I'm Heather Lou, a pattern designer and sewing educator for the modern maker. At Closet Core Patterns, we transform your imagination into step-by-step implementation that helps you create a wardrobe you love - not one you're limited to buying off the rack.

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