Furthermore, as a nod to the French actress Catherine Deneuve (the main character of The Umbrellas of Cherbourg), her daughter, Chiara Mastroianni, performs in the role of Julie's sister.
Additionally, this is a nod to the French actress Catherine Deneuve (the lead in The Umbrellas of Cherbourg), as her daughter Chiara Mastroianni plays the part of Julie's sibling.