They do. There are lots of underwear patterns around and Susan of measuretwicescutonce blog has come up with a series of knicker patterns for wovens and knit fabrics. 
She’s a local star really.

I attempted to make the knit knickers – The Mary Knickers. All of these patterns come with a design manual. You get to be your own designer with these patterns.

DH had a good chuckle when he saw my first attempt. So I’ve got a lot of learning to do and maybe I need to work on my design skills a lot more.

He reminded me that sewing should be fun right?

These drawings were my first pattern alterations. The green marking is where I’ve traced the side leg on the knickers I already own, as a comparison.

So I tried again.

Used a basic beige to test out my alterations. This fabric is much easier on the eyes:)

Finished the gusset edges

Use the coverstitching for the leg edge.

 Then it was time to attempt the pink/fushia version.

This time I used the leg shaping and added elastic at the leg edge. 

And that’s a wrap for now.

Thanks Susan for developing these patterns. They’re all so cute and Susan’s knowledge of all things sewing blows me away everytime we meet.
Dear Susan, Please make a series of bra patterns. That’s another skill I want to develop in a class environment this time.Take care.