Liliane Bettencourt, who was the World’s richest woman, has died aged 94, her family has confirmed.
A statement said she had died at home "peacefully" overnight.
With an estimated 2017 net worth of 33bn euros (£30bn; $40bn), she was heiress to cosmetics firm L'Oreal.
She left the company's board in 2012 and was rarely seen in public afterward, but remained in the news because of a high-profile exploitation case following her dementia diagnosis.
In a statement, the company's chairman and CEO Jean-Paul Agon said: "We all had a deep admiration for Liliane Bettencourt who has always watched over L'Oreal, the company, and its employees, and who was very attached to its success and development.
"She personally contributed a lot to its success for very many years. A great woman of beauty has left us and we will never forget her."
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The heiress became embroiled in a public feud with her estranged daughter, Francoise Bettencourt-Meyers, in 2007.assets, including her holding stake in the cosmetics company, were placed in a trust controlled by her daughter.
Liliane Bettencourt's assets, including her holding stake in the cosmetics company, were placed in a trust controlled by her daughter.
One of her two grandchildren, Jean-Victor Meyers, succeeded her on L'Oreal's board as vice chairman and was named to guard her personal affairs.
Her father, Eugène Schueller, founded a hair dye company in 1909, which then turned into the L'Oreal group.
It is now the world's largest cosmetics company.
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