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How to make Hemless Boyshorts

Someone told me recently that some women didn’t make their own underwear, because they felt the leg elastics would show as a panty line under clothes. This shocked me for two reasons 1. Who wouldn’t want to make their own underwear? and 2. the panty line is SO easy to eliminate. Here then, is how to make hemless Boyshorts. I did this construction in a pair of  shorts I designed for a ready-to-wear company some years ago. Once you wrap your head around the concept, it is actually pretty easy.

You need a boyshorts pattern. Use my Boyshorts pattern, or draft your own from instructions in my book, Make & Fit Panties, or on my Craftsy class.  Perhaps you have a favourite pair you’ve cloned. Whichever route you take, the pattern should have the following elements:

  • a seam in the front
  • a seam in the back
  • no side seam
  • a straight leg hemline

Here I show the pattern I’m using. Yours may look a little different. I’ve indicated the actual seamlines and the hemline on the pattern. Be sure you have enough paper under the hemline to make this pattern double.

Now remove the hem turn-under allowance

Next, fold the pattern along the hemline and cut along the cutting line of the pattern (but not the hemline).

This makes a double sized pattern. Cut two of these out of lightweight stretch fabric. We are using sheer stretch mesh, but you could use Bamboo, Modal matte glisonette, or ultra fine stretch mesh. Anything super light and stretchy.

I like to press the fabric in half along the hemline at this point so it will be easier later. Next, sew the two layers together at the four seams along the centre front and centre back. I used a narrow serged seam. Right now this looks like an animal hide, but I promise, it will get better. Leave the seams on the outside for the moment.

Here’s the tricky part

To make hemless boyshorts, you will be making the inseam a stitch-and-flip seam so the inside will be raw edge free, just like the outside. Push the back gusset section up into the front section so that the right sides are together. You can see the shadow of the back through the front. Make sure the seams all line up and they are centred along the space.

Here’s a close up

You can serge the seam or not (I didn’t here) but now you can flip the shorts to the right side. Sometimes you just have to shake it and it will magically be right way round. The seams are enclosed on the outside of the shorts…

…and on the inside as well. At this point you can sew a rectangle of cotton for the gusset lining over the intersection.

To finish the top raw edge, you can sew elastic on, but here I sewed on a piece of 3″ wide lace. The shorts won’t sit so low (that’s old-fashioned, I know, but I don’t like them too low on my short body). Overlap the top edge by 3/8″ (9 mm) and use a three-step zig-zag to sew on the lace.

The finished hemless boyshorts!

 

5 replies
  1. Joanna
    Joanna says:

    Depending on the amount of stretch in the fabric, couldn’t you treat the waistline edge as a stitch-and-flip as well? I think I’d add a strip of power mesh about 1inch/2.5cm wide at the waistline between the layers, triple zigzag stitch stitching along both long sides, on the layer you plan on being next to the skin.

    Reply
    • Beverly Johnson
      Beverly Johnson says:

      You can make the hemline on the fold or the waistline on the fold but not both. You could make the waistline stitch and flip but you would have no way to turn the shorts the right way around. Unless there is a way that i haven’t found yet! Might be something to play around with!

      Reply

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