CANNES , France — The wind that had whipped up hems and careful hairstyles earlier in the afternoon died down just in time for the opening ceremony of the 79th Cannes Film Festival . Jury member Ruth Negga went with a green gown designed by Northern Irish designer Jonathan Anderson for Dior Haute Couture. She paired the look with Chopard jewelry. It was a switch from her cool white look earlier in the day, a satin suit from Celine for the photocall. She was styled by Karla Welch. Demi Moore wore Jacquemus for both her daytime and evening looks. You May Also Like For the opening ceremony, Moore sported a sleek white column gown from the independent French designer’s fall 2026 collection. The dress was a sculptural white sequined bustier gown with a dramatic train, paired with matching sequined heels and a pochette. Moore completed the ensemble with a stunning 18-karat white gold necklace set with more than 226 carats of diamonds from Chopard’s high jewelry collection.…