The Derek Lam 10 Crosby Lauren Twofer Midi Dress features a sophisticated pleated skirt paired with a coordinating vest bodice, creating a chic, layered look. The Derek Lam 10 Crosby Lauren Twofer Midi Dress features a sophisticated pleated skirt paired with a coordinating vest bodice, creating a chic, layered look. 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.