"Naked" dresses just aren't going away. Sure, they've been a big hit on the red carpet for years (hello, Cher wearing Bob Mackie), and this season, they've been all over the catwalk too, especially during London Fashion Week. But before we delve into various designers' takes on the risqué frock, it might be useful to understand what we define as a "naked" dress. A "naked" dress can refer to a piece that is transparent, sheer, has strategically placed material, or even a dress that is nude in tone so the wearer appears "naked." From the likes of Preen, with pretty, sheer chiffon dresses, to Ralph & Russo's sassy gowns, as well as see-through frocks from Emilia Wickstead and Joseph, every type of designer seemed to showcase at least one "naked" dress or three.