suit pants skirt
Mens wool suit pants are great for making different types of skirts. Margiela, Junya Watanabe, AF Vandevorst, Alexander Wang, Christian Dior (John Galliano), Dries Van Noten, Max Mara, Junky Stylin and many others have all made them. You can find good materials at any fleamarket and second hand store. Buy the whole suit, so you get more of the same material and can use the suit jacket parts for the skirt if necessary. Here are couple of examples on how they could look. Which one is your favorite?
Cotton + Curls hs made a tutorial on how to make a maxi skirt from straight suit pants.