I finally got around to making a few different patterns based on a couple of my favorite pair of underwear. The pair above is based on my favorite (and pricey) pair of hiphugger style underwear.
They are really quick to sew and I just used a zig zag stitch to attach the elastic to the waist and leg openings. I did use my serger for the crotch lining but it's not necessary. Ewww. Crotch. What an ugly name.
This pair most closely resembles the pair I copied. It's a lightweight cotton jersey. Almost like a thin t-shirt weight. The blue stripes in the first photo are an example of how buying fabric online can end in surprises. I thought it looked like it would be a cute stripe for children's wear, but it doesn't have the weight for toddler clothes. It's very lightweight and is more suited to feminine clothes. Actually you may see it again in the future if I ever get around to sewing clothes for myself.
Here you can see the lace cutout and my zig zag stitch a bit better. When I made these I just straight stitched (3.0 stitch length) the vertical lace onto the panty before stitching the waist and leg lace. I just eyeballed where it should go. I then trimmed the fabric from underneath as closely to the stitch line as possible.
Overall I'm pleased with the fit. I need to tweak the patterns I made a bit but they fit and they look pretty cute.
I wish that I had made these sooner, especially since I bought all the lace ages ago. I can't even remember where I got it from but I do recall finding it pretty easily with a Google search. Etsy is also a great place to start looking for supplies if you are thinking of making your own fancy knickers.
I quickly searched for the place I bought the lace from and of course I can't find it. I did find a couple of other links.
Kathy's Lace and Elastic
Elastic by the Yard