Léa Hélène Seydoux-Fornier de Clausonne, known professionally as Léa Seydoux; born 1 July 1985, is a French actress. She began her acting career in French cinema, appearing in films such as The Last Mistress (2007) and On War (2008). She first came to attention after she received her first César Award nomination, for her performance in The Beautiful Person (2008), and won the Trophée Chopard, an award given to promising actors at the Cannes Film Festival. Seydoux is the daughter of businessman Henri Jérôme Seydoux-Fornier de Clausonne and Valérie Schlumberger. She was born in Passy, in the 16th arrondissement of Paris, and grew up in Saint-Germain-des-Prés in the 6th arrondissement. She had a strict Protestant upbringing, but she is not religious. Seydoux is one of seven children. She has three older half-siblings (Marine Bramly, Noah Saglio and Ondine Saglio) from her mother's first marriage, an older sister, stylist Camille Seydoux from her parents' marriage, and a further two paternal half-brothers, Ismaël Seydoux and Omer Seydoux, from her father's marriage to model Farida Khelfa. Seydoux's parents are both partly of Alsatian descent. Her father is a great-grandson of businessman and inventor Marcel Schlumberger, while her mother is a granddaughter of Marcel's brother, Maurice Schlumberger. The family name came to exist in 1902, when Seydoux's great-great-grandfather Charles-Louis-Auguste-Jacques Seydoux (1870–1929) married Mathilde, daughter of Languedoc aristocrat François Fornier de Clausonne de Lédenon, whose family held the titles of Baron de Lédenon and seigneur de Clausonne, de Laugnac et de la Bastide d'Albe. The Seydoux family is widely known in France. Her grandfather, Jérôme Seydoux, is the chairman of Pathé; her granduncle, Nicolas Seydoux, is the chairman of Gaumont Film Company; her other granduncle, Michel Seydoux, also a cinema producer, is the chairman of the Lille-based football club Lille OSC; and her father is the founder and CEO of the French wireless company Parrot. Despite Seydoux's connections, her family initially took no interest in her film career and did not help her. As a child, she had no desire to act. She instead wanted to be an opera singer, studying music at the Conservatoire de Paris. Since then, she has appeared in major Hollywood films including Inglourious Basterds (2009), Robin Hood (2010), Midnight in Paris (2011) and Mission: Impossible – Ghost Protocol (2011). In French cinema, she was nominated for the César Award for Most Promising Actress for a second time for her role in Belle Épine (2010) and was nominated for the César Award for Best Actress for her role as a lady-in-waiting to Marie Antoinette in the film Farewell, My Queen (2012). In 2013, Seydoux came to widespread attention when she was awarded the Palme d'Or at the Cannes Film Festival for her role as a lesbian art student in the critically acclaimed film Blue Is the Warmest Colour. That same year, she also received the Lumières Award for Best Actress for the film Grand Central and, in 2014, she was nominated for the BAFTA Rising Star Award and starred in the films Beauty and the Beast, The Grand Budapest Hotel and Saint Laurent. She gained international attention for her appearance as Bond girl Madeleine Swann in Spectre (2015) and will reprise the role in No Time to Die (2021). She also provides the voice and likeness of the character Fragile in the video game Death Stranding (2019).

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