How to Sew a Beautiful DIY Butterfly Top With Flowy Tie Sleeves

by AssunDIY
9 Materials
2 Hours

Follow this tutorial to learn how to make a DIY butterfly top. The wrap ties and butterfly sleeves make it soft and flowy, and you can pair this butterfly top with any bottom piece from your wardrobe. It’s pretty easy to make, so let’s get started.

Tools and materials:

  • 100% polyester fabric
  • Iron-on interfacing
  • Ruler
  • Scissors
  • Sewing pins
  • Thread
  • Sewing machine
  • Iron
  • Plate
Folding the fabric into a square

1. Cut out your butterfly top

Fold your fabric in half widthwise and then the lengthwise so you have four layers in a square.

Mark 50 centimeters (19.68 inches) from the folded corner along the top fold of your square.

Marking along the folded corner

Mark 45 centimeters (17.16 inches) from the folded corner along the side folded edge.

Measuring and marking the fabric

Make a 25-centimeter (9.84-inch) line from the 45-centimeter (17.16-inch) mark into the fabric, parallel to the open edges.

Connecting the marks with a ruler

Now draw in a line to connect the 50-centimeter (19.68-inch) mark with the end of the 25-centimeter (9.84-inch) line.

Using a plate to mark the curves

Use a round object (I used an inverted plate) to mark curves at three points along that diagonal line. Watch the video from 0:43 to 0:53 to see the exact placement of these curves.

Cutting the fabric along the curved line

Cut the fabric along the curved line.

Making the neckline

2. Make the neckline

Mark an 8-centimeter (3.15-inch) quarter-circle at the folded corner of the fabric and cut it out. That will be the hole for your neck.

Cutting out the angle

Unfold the fabric once and draw a line starting 2 centimeters (1.78 inches) from the neck on the shoulder, angled down gently to join the side of the neck. Cut out the angle.

Unfolding the fabric

Unfold the fabric completely to reveal the V-neckline of your top.

How to add neckline interfacing

3. Add neckline interfacing to your butterfly top

Follow the video from 1:26 to 1:35 to see how I cut the neckline interfacing.

Alternatively, you can cut a 30-centimeter (11.81-inch) square from your leftover fabric and then cut the interfacing to match it.

Iron the interfacing to the wrong side of your leftover fabric.

Cutting out the interfacing size

If you didn’t cut your fabric to a 30-centimeter (11.81-inch) square first, then cut the fabric to the interfacing size on just the straight edges.

How to make a butterfly top

Fold that piece of fabric, with the interfacing, into quarters and mark an 8-centimeter (3.15-inch) quarter-circle at the folded point. Cut out that quarter circle.

Cutting an angle on the interfacing

Unfold the interfacing piece once and make the same 2-centimeter (0.79-inch) angle cut that you did for the main piece.

Cutting the neckline facing

Mark in and cut out 4 centimeters (1.57 inches) from the neckline on the front of the interfacing fabric piece.

DIY neckline facing

Here is what your completed neckline facing should look like.

Pinning the neckline facing to the neckline

With right sides together, pin the facing to the neckline of the top and then sew it in place along the inside edge.

Snipping the seam allowance

Snip into the seam allowance all the way around so the facing will lay smoothly inside your top.

Folding the interfacing inside the top

Fold the interfacing to the inside of your top.

Pinning the neckline

Pin it in place and topstitch it around the neckline edge.

Cutting out the bias tape from fabric

4. Cut the fabric bias tape 

Cut 2 strips of fabric, one measuring 140 x 5 centimeters (55.1 x 1.9 inches) and the other one measuring 170 x 10 centimeters (66.9 x 3.9 inches). Cut the rest of your fabric into a long length of bias tape.

Sewing the bias tape to the top

With the right sides together, sew one strip of bias tape along each side of your top.

Tip: if you look for the V at the front of the neckline, you’ll be able to tell where the front, back, and sides of your top are.

Pinning and sewing the other bias tape edge

Turn the bias tapes in, then fold them up from the outer edge twice. Pin them in place and then sew. 

Marking the center of the top

Using the V in the neckline as a guide, mark the center of your top at the bottom of the front and back.

Pining the ties to the butterfly top

5. Make and attach ties to your butterfly top

With the right sides together, pin the 140 x 5-centimeter (55.1 x 1.9-inch) strip to the bottom of the front of your top, aligning the center of the strip to the center of the front of the top.

Sew the bias in place along the bottom edge.

Folding and pinning the strips

Fold in and pin those strips of bias just as you did for the side pieces.

Folding the ties

For the ties that extend beyond the top, fold each side into the middle and then fold it in half.

Sewing the ties

Sew the ties at the ends and along the open edge.

Attaching the long strip to the top

With right sides facing, pin the 170 x 10-centimeter (66.9 x 3.9-inch) strip to the bottom of the back of your top on the wrong side. Then fold the strip in half lengthwise. Fold under the edge and pin that edge to the right side of your fabric.

Folding and pinning the ties

For the ties that extend beyond the ends of your top, fold in both edges and then fold the strip in half.

Sewing the ties

For the front and back ties, sew both ends of the ties closed and sew the ties down along the open long edge.

DIY butterfly top

DIY butterfly top tutorial

Wrap the ties from the back to the front and make a bow. And now you’ve got a beautiful, light, flowy butterfly sleeve top. I hope you try making this and let me know, in the comments, how yours turned out. 

Suggested materials:
  • 100% polyester fabric
  • Iron-on interfacing
  • Ruler
See all materials

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Join the conversation
  • April April on May 19, 2022

    I LOVE this design! Thank you for the tutorial. I have a question, though. I don't do anything with 100% polyester fabric- though I will use a blend. Is there some reason you specified polyester? And, is it stretch or woven polyester. That was 2 questions! Thanks 😊


    April Iris McLeod

  • Susannah Susannah on May 25, 2022

    It is a great idea! I also do not use polyester but I think cotton would be fine and much cooler-I am in Florida- so it is hot most of the time! Thank you for this pattern!