For example, consider Georges Alexandre Adrien Lepape (1887-1971), a mainstay of French fashion illustration from around 1910-1930. His Wikipedia entry (in French) is here. English-language blog posts devoted to him are here and here. A lengthy French post is here.
Lapape's style is regarded as influenced by Japanese prints -- flat areas and thin linework, heavily design oriented.
Lapape married around the time his career was launched, and he had a daughter. For some reason, he seems to have ceased being active in fashion illustration by the very early 1930s, if images found on the Internet are any clue. He is known to have built a house by the Riviera, and died near Châteaudun, southwest of Chartres.
Dressed to the nines.
This publication for the famed couturier launched Lepape's career in fashion illustration.
Interesting Voisin car, distorted perspective.
Tall, narrow skyscrapers, tall, narrow lady. Very 1920s.
Apparently a late fashion illustration by Lepape.