**Has sweater weather ever looked (and felt) *this* good?** The Derek Lam 10 Crosby Violette Sweater features short sleeves, partial buttons on the front, and a slim fit. **Has sweater weather ever looked (and felt) *this* good?** The Derek Lam 10 Crosby Violette Sweater features short sleeves, partial buttons on the front, and a slim fit. 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.