I have always been a fan of the work of French artist and designer Paule Marrot.
Paule Marrot (1902–1987) was a Parisian textile designer widely known for her textile prints with a flat, two-dimensional, upbeat style — often with a floral pattern. She experienced strong popularity in the U.S. after World War II, worked withRenault to develop the company's textile and color division, and redefined furnishing fabrics in her native country of France. (via)
She has seem to make a big resurgence in recent years. Here are a few of my favorites of today.