the 1998 novel The Vintner's Luck by Elizabeth Knox, in which he appeared opposite Jérémie Renier, Vera Farmiga, and Keisha Castle-Hughes. That same year, he also starred as Nathanaël in Alain Tasma's drama Ultimatum, set in 1990's Israel during Gulf War. In 2010, he portrayed Henry I, Duke of Guise in Bertrand Tavernier's romance film The Princess of Montpensier, based on the 1662 novel of the same name by Madame de La Fayette. In 2011, he played William in Emmanuel Mouret's comedy film The Art of Love. In 2012, Ulliel made his stage debut in Que faire de Mister Sloane?, an adaptation of English author Joe Orton's 1963 play, Entertaining Mr. Sloane, in which he played the title role and was directed by Michel Fau at the Théâtre des Champs-Élysées in Paris. That same year, he also voiced Jack Frost in the French version of the animated film Rise of the Guardians; and played Balthazar, one of the four sons of Nicole Garcia's character in Brigitte Roüan's comedy film, A Greek Type of Problem. Saint Laurent and It's Only the End of the World (2014–2019) He portrayed French fashion designer Yves Saint Laurent in the 2014 biographical film Saint Laurent directed by Bertrand Bonello, which earned him a Lumières Award for Best Actor and nominations for the César, and for the Globe de Cristal for Best Actor. In December 2014, Ulliel was a member of the jury of the Cinecoles Short Film section at the 14th Marrakech International Film Festival. In 2015, Ulliel starred as Tomas in an adaptation of Lars Norén's play Démons, directed by Marcial Di Fonzo Bo at the Théâtre du Rond-Point in Paris. In 2016, he appeared in two films: the lead role in Xavier Dolan's It's Only the End of the World as Louis, a playwright who returns home after twelve years to tell his family that he's dying, in which he starred opposite Marion Cotillard, Vincent Cassel, Léa Seydoux and Nathalie Baye; and in Stéphanie Di Giusto's The Dancer, an unconventional biopic of American dancer Loie Fuller where Ulliel portrayed Count Louis d'Orsay. In 2017, he was nominated for the Jury Prize for Best Actor at the Riviera International Film Festival for his role in Xavier Dolan's It's Only the End of the World alongside co-star Vincent Cassel. Ulliel also won his second César Award, this time for Best Actor, for his performance in