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 CEO of the French wireless company Parrot.
Bunicul ei, Jérôme Seydoux, este șeful companiei de film Pathé; unchiul ei, Nicolas Seydoux, este șeful companiei Gaumont Film Company; celălalt unchi al ei, Michel Seydoux, tot producător de film, este președintele clubului Lille OSC; iar tatăl ei este președinte-executiv al companiei franceze de wireless Parrot.