The Derek Lam 10 Crosby High-Rise Slim Trousers offer a tailored, flattering fit with a high-rise waist and sleek, slim silhouette. The Derek Lam 10 Crosby High-Rise Slim Trousers offer a tailored, flattering fit with a high-rise waist and sleek, slim silhouette. Named after the original NYC flagship store address, Derek Lam launched Derek Lam 10 Crosby in 2011 to elevate and transform everyday style through fit, form, fabric, color, and attitude.