Many years ago my grandma crocheted a Christmas tree skirt for each of her daughters. It was made with standard yarn, but very lacy looking. My mom's was white, and she put a plain red cotton skirt underneath it. It was SO pretty!
My mom passed away and my sister has the tree skirt. Now that I've learned how to knit, I'd love to make my own tree skirt. I did a bit of research on the internet, and any knitted tree skirt I find is more the bulky fabric type, not light and lacy like my grandma's crocheted skirt.