She's only nineteen years old and has already worked with the legendary director, Stanley Kubrick in Eyes Wide Shut, been in blockbusters like Deep Impact, and even received a Golden Globe and Emmy nominations for her role as Joan in the made-for-TV film, Joan of Arc.
Sobieski was born Liliane Rudabet Gloria Elsveta Sobieski in New York City. Her parents are American novelist/screenwriter Elizabeth (née Salomon), who also works as Sobieski's manager, and French painter and former actor Jean Sobieski.
Sobieski's first name, "Liliane", was the name of her paternal grandmother. One of her middle names, "Elsveta", is derived from "Elżbieta" which is the Polish equivalent of "Elizabeth". Sobieski's younger brother Robert attends Princeton University. Sobieski's maternal grandfather, United States Navy captain Robert Salomon, was Jewish and Sobieski grew up in a "pan-religious" family; she has said that she is "proud of [her] Jewish roots". She has stated that her "...great great granduncle" was John III Sobieski, an elected king of Poland who saved Europe with the Polish army in 1683 to lift the siege of Vienna from Ottoman Turks, although no documentary evidence supporting this claim has ever been presented.
Sobieski speaks fluent French, which she picked up from her father, who currently lives in France. She attended Trevor Day School