The Cannes Film Festival made a controversial decision to ban sheer dressing on its red carpets in 2025, provoking strong reactions from celebrities and stylists. In 2026, Riley Keough decided to test the event’s rules by showing up in a sheer look from Chanel’s latest spring collection. Riley Keough wearing Chanel at Cannes . Getty Images Styled by Jamie Mizrahi, Keough wore a blush organza set featuring a tailored blazer and a matching skirt, both pieces completely sheer with embellishments trimming the hem’s edge. She paired it with nude ankle-strap pointed-toe pumps with a black toe cap — a Chanel signature. Keough, an ambassador of the French house, is at Cannes this year as the lead of “Butterfly Jam,” Kantemir Balagov’s English-language debut, which opened Directors’ Fortnight on Wednesday evening. The film is a coming-of-age story set inside New Jersey’s Circassian immigrant community, costarring Barry Keoghan and Harry Melling.…