My Kasia skirt from the sew along. The only modifications I made were making a "real" slit in the back and lining the skirt.

The main fabric is a Millworth lightweight twill found at a thrift store. This had been the fabric in my stash that I had been saving for something special. The solid aqua fabric is from an XXL shirt (thrift store, again!) and has some stretch to it. I used this for the hip panels and the front zipper panel. It makes the skirt extra comfortable!