Olivier Theyskens has been experimenting with hosiery since he landed at Nina Ricci, showing dégradé leggings that shaded from nude to violet, or playing with opacity so it looks like the ribbons of ballerina slippers crisscross up the calves. For his pre-fall collection, he took things a playful step further, adding Marilyn Monroe and Dita Von Teese-style beauty marks to opaque tights near the knee or at the ankle. He wasn’t the only gams man at work yesterday, either. At Marc Jacobs’ Louis Vuitton presentation, the models strutted out in ribbed legwarmers stitched to the backs of their patent leather pumps. All the leg action has us itching to ditch our winter boots. For more news and trends from pre-fall, see our complete coverage.