Easy and breezy, this luxuriously soft chambray denim A-line dress features a flattering belted waist. Easy and breezy, this luxuriously soft chambray denim A-line dress features a flattering belted waist. 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.