Kristen Stewart  had her signature casual style when she arrived at Cannes on Friday, but later changed into a sparkly pantsuit when she walked the red carpet for the premiere of her latest project, Clouds of Sils Maria . She skipped the photocall for the film earlier in the day, but her costars Chloë Moretz and Juliette Binoche both represented the film at the photo op and press conference. This project will be a big one for Kristen as it is one of her first films after finishing The Twilight Saga (the other being another indie, Camp X-Ray, which premiered at Sundance). Clouds of Sils Maria is already earning Kristen rave reviews . She isn't the only Twilight star who has been bringing noteworthy films to Cannes this year — Kristen's ex-boyfriend and costar, Robert Pattinson , premiered Maps to the Stars and The Rover at Cannes earlier this week , the latter of which earned the actor excellent reviews of his own . However, there will be no South of France run-in for Rob and Kristen as the British actor has already left the French Riviera .