This is Margaret Howell's first shirt. Measurements (laid flat): width 51cm, length (front) 63cm, length (back) 68cm, sleeve length 46cm. (Slight variations may occur) It's labeled as size 1, which I've indicated as S, but I think it's equivalent to M. Please check the measurements. Quality: 100% cotton. The tag has been removed, but it has never been worn.