Apparently this was enough of a frustration to me that I decided to take an old stained shirt of mine with wonderful stretchiness in all directions, and drafted a quick pattern using a pair of Wren's Hanes. My prototype had good stretch recovery and a casing with some elastic at the waist. They function, and they stay put, but the leg holes turned out a bit wonky and the elastic waist leaves a bit of red marking on Wren.
|I added a few extra layers of material at the crotch for greater 'absorption'.|
If you don't decide to invest in the aforementioned pattern, I will throw out a few undie-sewing tips:
1. Use a knit with 2-way stretch or even better yet, find a knit with at least 4% spandex. They will fit like a dream, I promise!
2. If using a regular sewing machine/zigzag stitch I highly recommend using a jersey needle. I don't know the specifics of why they're awesome and incredible, but I can tell you from experience that there is a marked difference between using a jersey needle and a standard needle whilst sewing up knits.
3. For awesome and unique patterns and colors, I love to peruse the thrift shop t-shirt aisles. One adult size shirt can usually make at least 2 pairs of the cutest, snuggest undies you've ever seen. Better yet, I bring Wren along with me and let her pick out some colors that she likes. That's how we ended up with those perfect little red stars. She also wanted a huge cookie monster t-shirt, "but not for undies, just for holding in my hands".
As you can tell, I'm stoked about this pattern and the chance to venture beyond the pinky-pinkish-pink underwear color scheme for toddler girls. My excitement is such that I have officially become "that aunt" who will be gifting a bunch of underwear to my niece come Christmas. It's cliche, I know, but you've seen how cute they are. It just can't be helped.