If you haven't met the Tilda slip skirt, then *bonjour*! A French-inspired bias-cut design makes it drape and move just so – equally chic for a night out or a day about town. If you haven't met the Tilda slip skirt, then *bonjour*! A French-inspired bias-cut design makes it drape and move just so – equally chic for a night out or a day about town.