How to Sew A French Seam: Your Step By Step Guide for a Neat Finish

If you’ve ever wondered how to sew a french seam (often called an enclosed seam) or why you should, this is the perfect step by step guide for you.

French seams surprisingly simple to master and super aesthetic to look at. Yet, due to the need to sew twice (or sew a second seam), they are often viewed as much more complex endeavor. Oftentimes, the desire to do something quickly will outweigh having the perfect finish.

That said, it’s a lot easier and faster than people realize. Once you get the hang of it, you’ll want to sew french seams in so many more of your sewing projects.

Let’s dive in!


  1. Why Choose a French Seam?
  2. Materials You’ll Need
  3. Preparation Steps
  4. Step-by-Step Guide to Sewing a French Seam
  5. Common Mistakes and How to Avoid Them
  6. Additional Tips for Different Fabrics
  7. FAQ
  8. Conclusion and Key Takeaways

Why Choose a French Seam?

French seams are the epitome of neat finishes in the sewing world. They completely enclose the raw edges of your fabric, making them ideal for sheer and lightweight fabrics.

Plus, they add a professional touch to your sewing projects. I use them on the majority of my projects (like this summer set thrift flip).

So, why not elevate your garment with this elegant seam finish?

Key Takeaways:

  • Ideal for sheer and delicate fabrics
  • Provides a neat and professional finish
  • Completely encloses raw fabric edges

Materials You’ll Need

Before we jump into the stitching line, let’s gather our materials. You don’t need anything fancy, just the basics:

Preparation Steps

Alright, let’s prep our fabric and sewing machine:

  1. Cut Your Fabric: Make sure to follow the pattern calls for your garment.
  2. Thread Your Machine: Use thread that matches your fabric for a seamless look.
  3. Set Up Your Ironing Board: You’ll need this for pressing the seams flat.

Step-by-Step Guide to Sewing a French Seam

Now, let’s get into the nitty-gritty of sewing a French seam. Don’t worry; I’ll walk you through each step.

Glory Allan: How to Sew French Seams for Beginners

First Seam: Sewing Wrong Sides Together

  1. Add Additional Seam Allowance: Given the raw edge of the fabric will be enclosed inside the seam, you’ll want to account for the extra folding in your fabric. There is some great advice for beginners to aim for 1″ (2.5cm) seam allowance. This helps with the bulkiness of french seams.
  2. Place Fabric Wrong Sides Together: Yes, you read that right! You’re going against the norm of sewing the right sides together (do not do this!). Place the fabric wrong sides together and pin along the seam line.
  3. Sew the First Line: Use a straight stitch to sew along the seam line with a 5/8″ seam allowance.
  4. Trim the Seam: Use sharp scissors to trim the seam allowance down to 3/8″.

Second Seam: Enclosing the Raw Edges

  1. Press the Seam: Open the fabric and press the seam flat with your iron.
  2. Fold and Pin: Fold the fabric along the first seam, enclosing the raw edge inside. Pin in place.
  3. Sew the Second Line: Sew a second seam 1/4 inch from the folded edge, enclosing the raw edge completely.

Final Steps

  1. Press the Seam Flat: Give your newly sewn French seam a good press to make it lay flat.
  2. Inspect Your Work: Make sure the seam is neat and the raw edges are completely enclosed.
Made To Sew: How to Sew a French Seam

Common Mistakes and How to Avoid Them

Even seasoned sewers make mistakes. Here are some common mistakes and how you can avoid them:

  • Not Trimming Enough: Trim the first seam allowance adequately to avoid bulk.
  • Skipping the Press: Always press your seams; it makes a world of difference.
  • Wrong Stitch Size: Stick to a regular straight stitch; fancy stitches won’t work here.

Additional Tips for Different Fabrics

  • Sheer Fabrics: Use a smaller stitch size for a more secure seam.
  • Medium Weight Fabrics: Increase your seam allowance slightly for a sturdier finish.
  • Heavy Fabrics: Not ideal for French seams, but if you must, use a larger seam allowance.


What is a French seam?

A French seam is a sewing technique used to encase raw fabric edges within a neat and enclosed seam. It’s particularly useful for lightweight and delicate fabrics, as it creates a clean finish without any exposed raw edges.

This technique is commonly used for garments like lingerie, sheer fabrics, and lightweight dresses, where a polished and refined look is desired.

What is the difference between a flat seam and a French seam?

While both flat seams and French seams are methods of joining fabric pieces, the key distinction is in how they treat the raw edges of the fabric within the seam. Flat seams lay the raw edges flat, while French seams enclose and hide them for a cleaner appearance.

When would you use a French seam?

A French seam is a versatile sewing technique that’s particularly useful in the following situations:

  1. Lightweight and Sheer Fabrics: French seams are ideal for delicate and lightweight fabrics like chiffon, silk, organza, and sheer materials. They prevent fraying and provide a clean finish without visible raw edges.

  2. Lingerie and Sleepwear: French seams are commonly used in lingerie, sleepwear, and other intimate apparel to ensure comfort against the skin and a polished appearance.

  3. Garments with Exposed Seams: When the seam allowances are visible on the inside of the garment, such as in unlined garments or sheer styles, French seams add a neat and refined look.

  4. Avoiding Bulk: French seams work well when you want to minimize bulk in seams, maintaining a smooth and even silhouette in lightweight fabrics.

  5. Simple and Elegant Look: French seams contribute to a clean, minimalistic, and elegant appearance, making them suitable for projects where simplicity is desired.

  6. Finishing Raw Edges: French seams are an effective way to finish raw edges without using sergers or bias tape. This is particularly helpful when those raw edges are prone to fraying.

  7. Special Occasion Garments: For special occasion garments where attention to detail is crucial, French seams provide a professional touch.

  8. Children’s and Baby Garments: French seams ensure a soft and comfortable finish for sensitive skin, making them suitable for children’s and baby clothing.

It’s important to consider the fabric type, the desired level of refinement, and the intended use of the garment when deciding whether to use a French seam.

What is the advantage of a French seam?

The advantages of using a French seam include:

  1. Neat Finish: French seams create a clean and polished finish on the inside of the garment, concealing raw edges and preventing fraying.

  2. Delicate Fabrics: They’re ideal for delicate and lightweight fabrics like chiffon, silk, and organza, as they avoid the need for serging or overlocking that might damage these fabrics.

  3. No Visible Raw Edges: French seams provide a tidy appearance, making them suitable for garments where seam allowances might be visible on the inside or outside.

  4. Comfortable Against Skin: In garments like lingerie, sleepwear, and children’s clothing, French seams provide a comfortable finish against the skin.

  5. Professional Look: French seams offer a professional and refined look to garments, enhancing the overall quality and aesthetics.

  6. Simple Elegance: They contribute to a minimalistic and elegant appearance, enhancing the visual appeal of the garment.

  7. Avoiding Bulk: French seams work well for avoiding bulky seam allowances, which is particularly important in lightweight fabrics.

  8. Finishing Raw Edges: They serve as an effective method for finishing raw edges without the need for additional trims or bias tape.

  9. Special Occasion Garments: For special occasion wear, French seams add a high level of attention to detail and craftsmanship.

  10. Enhancing Durability: By enclosing raw edges within the seam allowances, French seams add durability to the garment, preventing fraying over time.

These advantages make French seams a versatile and valuable technique, especially for garments that demand a refined finish and fabrics that require gentle handling.

Are French Seams difficult?

French seams can be a bit more intricate than basic seam techniques, but they are not overly difficult to master with practice. As is the case with all of my tutorial advice, I believe you can master anything with practice.

Conclusion and Key Takeaways

And there you have it! You’ve just learned how to sew a French seam and I couldn’t be prouder.

Remember, practice makes perfect, so don’t be too hard on yourself if it takes a couple of tries.

If you liked this article or projects like this, please follow me on Instagram and YouTube for more images and videos of my work. It means the world to me and is free!

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As always, thank you so much for reading, and happy sewing!

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