Sandals with socks, tights or tucked in leg warmers, Is this a trend or a fad? They first appeared in London, then Milan and now Paris. Hosiery makers stand to make a killing. Designers like MAN by Agi & Sam, Burberry Prorsum, Versace, Prada, Rick Owens, 3.1 Phillip Lim and Mugler are leading the way.