Femme refermant sa robe dans le dos, où on voit apparaître un soutien-gorge agrandit grâce à une rallonge soutien-gorge.

How to Make an Easy Bra Extender

Written by: Laetitia Lanteri

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Published on

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Last updated on

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Time to read 5 min

Are you tired of bras that are tight or no longer fit your body shape perfectly? No need to run to the stores to invest in a new piece! You just need to make a bra extender. With a little creativity and some tips, you can give a second life to your favorite bras. Discover our advice for lingerie that fits like a glove!

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How to make a bra extender?

Has your favorite bra become a bit too tight? No need to leave it at the bottom of the drawer! There is a simple and practical solution to make it comfortable again, for just a few euros. With a bra extender, you can adjust the size of your lingerie in the blink of an eye. At Les Petits Imprimés, we have anticipated your needs by offering bra extenders in neutral tones, suitable for different band widths. Easy to install, just attach them to the existing clips of the piece you want to extend!

What size extender to choose?

Choosing the right size extender is essential. Start by measuring the width of your bra band. The extender should have the same width to fit perfectly. As for the length, it depends on your personal needs. If you've gained a little weight or simply need more comfort, an extender of a few centimeters may be enough. This personalized approach allows you to have a bra that fits like a glove.

Measurement guide

How to take my measurements?

Measure directly on your body using a tape measure, without pulling too tight. For an accurate result, remove your bra or wear one without underwire or rigid cups.


My bra size is:

How to attach an extender to the bra?

Attaching an extender to your bra is child's play:

  1. Attach the hooks of the extender to the clips of your bra.
  2. Then, attach the hooks of the bra to the clips of the extender.
  3. Adjust everything so that the extender is well positioned and the bra is comfortable.

This method allows for easy and quick use, without permanently altering your lingerie.

Woman sewing a bra extender.

Make your own extender

You have planned this outfit for several days, in all the details. It is perfect. However, you just realized that your favorite bra (and obviously the best suited for the occasion) has become slightly too small! Don't panic, you can make your own extender in no time, and for the unbeatable price of 0 €! Start by gathering the necessary materials. 

What materials to use for an extender?

To create a bra extender, the following materials are recommended:

  • A wide elastic band: ensures length and comfort.
  • Hooks and clasps: to attach the extender to the bra.
  • Soft fabric like cotton or lace: to match your existing piece.
  • Thread and a needle: to assemble the pieces.

These elements can be salvaged from an old bra that you no longer use. By recycling your lingerie pieces this way, not only do you save money, but you also make a gesture for the planet!

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How to assemble the extender?

  1. Measure a piece 1/3 smaller than the length you want to add to your bra band. Cut it out. 
  2. Measure and cut a piece of fabric twice as long as the elastic, which will serve to cover it and attach the hooks and clasps. 
  3. Using a sewing machine or equipped with thread and a needle, sew the strip of fabric edge to edge to create a long tube through which to pass the elastic. 
  4. Once sewn, turn the tube inside out so that the seam is on the inside. Pass the elastic through it while gathering the fabric. 
  5. When the elastic comes out on each side of the tube, pin it by adding the hooks on one side and the clasps on the other.
  6. Sew the whole thing securely, and you get your 100% homemade extender!
Someone making a piece to extend their bra at the

How to enlarge a tight bra?

Enlarging a bra that is too tight is easier than it seems. If you have an extra pair of straps, you can not only lengthen the width of your bra as you wish, but also create a low-back bra!

  1. Attach one strap on each side of the bra clasp, in the hooks and eyes. 
  2. Cross them and bring them to the front. 
  3. Attach them in the middle of your bust, under your bra.
  4. Adjust the length of the straps for a perfect fit!

At Les Petits Imprimés, we recommend always having spare straps; to replace those that are worn out at the last minute, or to extend the life of your favorite lingerie piece!

What tips for a comfortable bra?

A comfortable bra is essential for feeling good throughout the day. Here are some tips to achieve that:

  • Adjust the length of the back band with an extender.
  • Opt for soft and breathable materials like cotton.
  • Choose a bra in the right size by accurately measuring your bust.
  • Try wire-free or sports bras for better support.
  • Avoid models with too many seams or details that can irritate the skin.

Les Petits Imprimés also offers beautiful and practical models, suitable for all situations and all your favorite outfits!

How to modify an existing bra?

Modify a bra through sewing allows you to perfectly adapt it to your needs without buying a new one. First, to adjust a bra that is too tight, you can lengthen the back band by adding an elastic extension. Just sew a piece of stretchy fabric or salvage an elastic strap from an old bra to lengthen it. Next, you can reinforce or replace the straps with more comfortable or decorative materials, such as satin ribbon or wider elastics, for better support or a unique look. Finally, transforming a bra into a bralette or wire-free model is a good idea: by removing the underwires, you can enlarge the cups of the bra, ideal for relaxation. With a little creativity and some sewing tools, your old bras can take on a new life!

In summary, lengthening a bra is a simple operation that can greatly improve your daily comfort. With a few basic materials and a bit of know-how, you can create a custom extension, adapt your lingerie to your body, and avoid the uncomfortable feeling of a too-tight bra. It's an economical, eco-friendly, and practical solution. Don't hesitate to share your creations and tips with your friends! Together, we can make fashion more accessible and tailored to everyone. And if you're looking for inspiration or unique pieces, be sure to check out the collections of Les Petits Imprimés, always on the lookout for the latest trends!

Have a question in mind? We have the answer!

What materials are needed to make a bra extension?

To create an extension, you need an elastic band, hooks/clasps, soft fabric (cotton or lace), and thread. Salvage these items from an old bra to save money.

How to choose the ideal extension size?

Measure the width of your bra band. The extension should have the same width. The length depends on your needs: a few centimeters are often enough for more comfort.

Can a bra be modified to make it more comfortable?

Yes, you can lengthen the band with an elastic extension, replace the straps with adjustable models, or remove the underwires to make it a soft and comfortable bralette.

Profile picture of Laëtitia Lanteri: expert writer in fashion for 7 years.

Laëtitia Lanteri

Experienced writer with over 1200 published articles in 7 years, Laëtitia deciphers the latest fashion trends and delivers fresh and current ideas for a bold style.


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