The Tilda slip skirt you know and love is now reimagined as a midi dress (incroyable)! A French-inspired bias-cut design makes it drape and move just so – equally chic for a night out or a day about town.The Tilda slip skirt you know and love is now reimagined as a midi dress (incroyable)! A French-inspired bias-cut design makes it drape and move just so – equally chic for a night out or a day about town.