From publishing house Assouline this season is the weighty, 260-page tome Gruau: Portraits of Men, showcasing the work of one of fashion's most respected illustrators, Rene Gruau. The brush behind some of the most iconic fashion imagery from the 1940s to the '80s, including Dior most legendary advertisements, Gruau's bold colour palette and slim silhouettes - both of which feel entirely modern - are celebrated in this hardback. As Mr Gruau once said: "A line... is the basis of all art. With a single line we can express grandeur, nobility and sensuality; the line synthesises sensations and concentrates knowledge.

