The former Twilight actor looks to have finally shed Bella Swan as she gained rave reviews for her portrayal of an aging actress's assistant in the film.
Wearing a sequin-covered white jumpsuit from Chanel with nude heels, the outfit highlighted her newly dyed red hair for American Ultra, for which she is teaming up with her Adventureland co-star Jesse Eisenberg.
Juliette meanwhile showed off her chic fashion style with a monochrome shirt dress, while Chloe wore a ruffled, off-the-shoulder dress with a drop hem.
Joining the cast of Clouds of Sils Maria on the red carpet were the cast of Pulp Fiction by director Quentin Tarantino. The film won the Palme d'Or in Cannes in 1994 and was screened at this year's festival.
L-R: Kristen Stewart, Juliette Binoche, Chloe Grace Moretz and Oliver Assayas
Earlier in the day, Juliette and Chloe had attended the photocall for Clouds of Sils Maria, with Oliver. The pair hammed it up for the cameras, jumping and waving as they smiled. Kristen was unable to make it due to a later flight.
Chloe looked the epitome of Riviera chic in a boater's hat and all-white ensemble, while Juliette contrasted Chloe with black studded trousers, and a suit jacket.