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6) Marie Besnier-Beauvalot(6 of 10)
6) Marie Besnier-Beauvalot(6 of 10)
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Beauvalot, 33, made her cheddar when she and her two siblings inherited the Lactalis dairy fortune from their grandfather. The three now run the French company, which produces Président brie among many other cheese, milk, and yogurt brands. Her estimated worth is around $2.7 billion.