How to Make Adjustable DIY Bathing Suit Straps the Easy Way

9 Materials
2 Hours

What’s not to love about summer? It’s warm, it’s vibrant, and that means it’s time to get those bikinis out. The downside of some bikini tops is the bikini straps. Some of them are not adjustable and really don’t hold anything up, leaving you feeling a little on the uncomfortable/anxious side.

I have a solution to this problem; making your own DIY bathing suit straps. It’s actually pretty easy! This is a great tutorial for beginners, too.

So if you’re wondering how to make swimsuit straps adjustable so that you can have fun without worrying about the next pending embarrassment, then scroll down to learn more!

Tools and materials:

  • 1 pair of swimwear sliders- figure 8 slider (½ inch internal size)
  • 1 pair of swimwear rings
  • Swimwear fabric
  • ¼ inch wide elastic
  • Thread
  • Pins
  • Scissors
  • Rotary cutter
  • Sewing machine
Swimwear strap pattern

1. Cut the straps

In this video, we will be cutting our adjustable swimwear straps to stitch using the Bailee bikini top pattern. So, I used the pattern as a guide for the straps.

However, you can make your own customized measurements by simply measuring your shoulders. Place the measuring tape on where you’d like the strap to be and add 4 inches to this number. This will be the length of your straps.

Cut two straps this length with a width of 1.5 inches. Cut two smaller straps that are 2.5 inches long by the same width as the longer straps - these will be the loops that hold the straps.

Sewing the bathing suit straps

2. Pin and sew

Place the fabric right sides together and pin the straps at the long edges. Leave a ½ an inch seam allowance. Now, sew along with the pins, with a zigzag stitch. Start stitching ⅜ of an inch from the raw edges.

Sewing elastic onto the adjustable swimwear straps

3. Sew on the elastic

Now, sew the elastic onto the seam allowance. This is the section between the stitch line and the raw edges. Place the elastic ⅜ of an inch down from the raw edge and start stitching.

Slightly stretch the elastic as you sew. Stitch all the way down until you get to ⅜ of an inch at the opposite end.

Turning the adjustable bikini strap inside out

4. Turn the strap inside out

Attach a safety pin to one end of your strap and turn it inside out.

Repeat the above steps for the other strap.

Sewing the back loops

5. Sew the back loops

Stitch your smaller back loops the same way, and turn inside out. Remember to turn them right sides facing before stitching.

Adding the slider to the adjustable bathing suit strap

6. Add the slider

Thread the strap through the slider by inserting it through one opening of the slider, over the bar, and out through the adjacent opening.

How to thread the slider

Now, thread a ring onto the end of the strap. Thread the end of the strap over the slider but under the previous length of the strap.

How to make bikini straps adjustable

Pull the end of the strap through, just enough so you can stitch it to the strap below. Watch my video at 4:50 minutes to see exactly how I feed in the sliders.

Pinning the strap end in position

7. Pin and stitch the straps

Stitch the strap end in position with a straight stitch.

Trimming off the excess fabric

Trim off the excess fabric when you’re done. Trim as close to the stitch line as possible. Don’t worry, this material won’t fray. Repeat this step on the remaining strap.

Inserting the short loop through the ring

8. Insert the short loop

Thread the short loop through the ring of the strap, as shown. Then, pin the ends of the loop together. Repeat this also on the remaining strap, and then you’re ready for the last but exciting step!

Sewing the loop together

Sew the loop ends together on each strap.

DIY bathing suit straps

DIY bathing suit straps

You now have a set of adjustable swimsuit straps! It really seems complicated to sew, but there’s nothing to it - these DIY bathing suit straps are super easy to create.

Now you can have fun without worrying about your bikini top. I love adjustable straps as they really fit snug and are customized so that you have a tight grip.

I hope you enjoyed this bathing suits strap tutorial as much as I enjoyed showing you. Let me know your thoughts in the comments below.

Suggested materials:
  • Swimwear sliders
  • Swimwear rings
  • Swimwear fabric
See all materials

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