Clouds of Sils Maria (known simply as Sils Maria in some territories) is a 2014 psychological drama film written and directed by Olivier Assayas, and starring Juliette Binoche, Kristen Stewart, and Chloë Grace Moretz. The film is a French-German-Swiss co-production. Principal photography took place from August to October 2013, with most of the filming taking place in Sils Maria, Switzerland. The film follows an established middle-aged actress (Binoche) who is cast as the older lover in a romantic lesbian drama opposite an upstart young starlet (Moretz). She is overcome with personal insecurities and professional jealousies—all while sexual tension simmers between her and her personal assistant (Stewart). The screenplay was written with Binoche in mind and incorporates elements from her life into the plot.Clouds of Sils Maria was selected to compete for the Palme d'Or in the main competition section at the 2014 Cannes Film Festival on 23 May 2014, and also screened at the Toronto International Film Festival and New York Film Festival. The film received positive reviews, with critics lauding the work as psychologically complex and praising the lead actresses' performances. It won the Louis Delluc Prize for Best Film in December 2014, and received six César Award nominations. Stewart received the César Award for Best Supporting Actress in February 2015, the first time an American won the award.