I went through my box of tartans and plaids fabrics, and the only one in an appropriate scale plaid in a good colour was a grey synthetic. I thought I'd try it anyways.
I wanted something better, which meant a trip to Value Village. There I chose a blue plaid, man's shirt, and a pair of thin gray/green flannel pajama pants. I took them home, washed them, and cut them apart, so I'd have flat fabric to work with.
First I made up a skirt from the darker plaid. The skirt was gathered from a 60" length of fabric, and the gathers really stood out. It screamed "Doll Dress"!! I hadn't looked at the label to see what the fibre content was, and was hoping I'd not made a mistake. But the real test is what it looks like after I soak it and let it dry, laying it crinkled on a heat register. It looked much better.....