D.T.
I'm sorry I don't have experience with skirts (yet)! However, my son went through a phase for a year where he would not wear jeans/khakis...had to be sweatshirt/knit material - it didn't matter if it were pants or shorts. I went crazy trying to find pants that didn't look like sweatpants. Old Navy had several knit cargo pants at the time. As far as skirts are concerned. I have gotten my daughter those sweater material leg warmers. They are snug to the leg, but you don't have to mess with the panty part as you would with tights. Good luck!