Among the 108 covers Georges Lepape, a French artist, created for Vogue is this one, for the June 15, 1931 Summer Fashions and Children’s Clothes issue. Mother and son’s matching striped shirts capture the seaside vibe. She is the epitome of informal chic.

“This year’s sports clothes, rigidly trim, are moulded to the point of exact duplication of the figure…,” observed the editors, who further reported that beach pajamas, like mama's splendid pair, “are weather-proof, element-proof nonsensities of the sturdiest fabrics woven, with divinely short jackets just covering the ribs....”