Léa Seydoux on Her Cannes Fashion, Best Red Carpet Tip, and Friendship With Adèle Exarchopoulos

A longtime friend of Louis Vuitton, Seydoux turned to the house to fashion her bisected Cannes wardrobe. The brief? “I like to be chic, but I also like to be sexy, feminine,” she says. The actor and her stylist, Alexandra Imgruth, felt that Old Hollywood fit her vision and sent their ideas to the Vuitton team. “I love this period. I just thought that women were so elegant, like Grace Kelly,” she says. “I like to be a bit timeless in a way.”

Seydoux hit the ground running at the Gentle Monster premiere, where she swanned along the Croisette in a navy off-the-shoulder gown with a sculptural, lettuce neckline and a black velvet waist sash. For the photocall the following day, she kept the feminine look in a white mock-neck silk blouse with a layered collar, which she tucked into a black vinyl miniskirt.

When it came time for The Unknown portion of the festival, the actor pivoted to suiting. A sartorial 180 from her flowing navy gown, she opted for a sleek three-piece suit for The Unknown premiere. But between the body-hugging flared trousers and the cropped, militaristic white vinyl skirt suit she wore for the photocall, the Vuitton team ensured that Seydoux’s sexy, feminine brief was met.

In a brief diversion from her all-Vuitton-all-the-time look, Seydoux and her friend Adèle Exarchopoulos found a moment to show each other some love via graphic tees. After Exarchopoulos, her Blue Is the Warmest Color co-star, arrived at the Nice Airport in a “Léa Forever” T-shirt, Seydoux returned the favor with an “Adèle” baseball cap and graphic tee.

“It was her idea,” Seydoux explains. “She asked me if she could wear a T-shirt with my face on it, and I said, ‘Well, if you do it, I have to do it as well.’ It was like a game between us.” It was an especially meaningful moment for the actors, who won the Palme d’Or 13 years ago. “This year she also has a movie in competition. She’s remarkable in her film,” she says. “So I’m proud of her, and it was a way to be like we’re together in this.”