As a young woman, in 1923, she had been engaged to novelist and aviator Antoine de Saint-Exupéry; however, the engagement was called off, even though Saint-Exupéry gave up flying for a while after her family protested such a risky occupation. Vilmorin's first husband was an American real-estate heir, Henry Leigh Hunt (1886–1972), the only son of Leigh S. J. Hunt, a businessman who once owned much of Las Vegas, Nevada by his wife, Jessie Nobel. They married in 1925 (1924 according to other sources), moved to Las Vegas, and divorced in the 1930s. They had three daughters: Jessie, Alexandra, and Helena.