When I spotted this fabric, I knew just what I had to make! Unfortunately there wasn't much left, so there are only a few of these. The fabric is cotton. The yellow stripes aren't showing very well in the photo, but they are definitely there!
This longer than usual tunic bod is joined at the sides with elastic for easy dressing. It is shown here with an antennae headband that can also be worn with monarch wings. Antennae are $14.