Léa Hélène Seydoux-Fornier de Clausonne (French pronunciation: [le.a sɛ.du] ( listen); born 1 July 1985), known professionally as Léa Seydoux, 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.