Madame Leontine Pauline Aubert was a French cabaret singer. She was also the mistress of Benjamin Guggenheim, and both were travelling in first class on the Titanic, which they boarded at Cherbourg, France, on the evening of 10 April 1912, with Guggenheim, his chauffeur, valet and her maid, Emma Sägesser. At dinner, she made the acquaintance of Jack Dawson.
- Her real surname is "Aubart." But in some sources, it is misspelled "Aubert," and this name is retained in the movie of James Cameron.
- Aubert survived in lifeboat 9, with her maid, Emma Sägesser.
- Her role is silent. She never once spoke during the film; just appeared.