Three Floor Whimsical Dress in Navy. - size US 4/ UK 8 (also in ) Three Floor Whimsical Dress in Navy. - size US 4/ UK 8 (also in ) Poly blend. Hand wash cold. Fully lined. Side seam pockets. Lace fabric. Exposed back zipper closure. TFLO-WD110. 635. Founded in 2011, THREE FLOOR was born from a shared desire to provide contemporary, high quality fashion based on clean fluid lines and softly tailored separates. Inspired by fashions elite; bloggers, editors and models off duty; THREE FLOOR centers their look on effortless style and strategic cut outs, bringing a truly innovative approach to detail and silhouette.