An American Saga, during the Cannes Film Festival, accompanied by her boyfriend Oli Green and their daughter Marlowe. This marked Marlowe’s debut on the red carpet, a significant moment for Sienna, who shares Marlowe with her ex-partner, Tom Sturridge. Sienna, 42, exuded elegance in a semi-sheer gown, while her daughter Marlowe looked adorable in a sweet pink dress.

Sienna’s lavender gown, adorned with layers of ruffles, captivated attention, revealing a glimpse of her figure through its sheer fabric. Paired with silver strappy heels and a diamond necklace, Sienna’s ensemble exuded sophistication and glamour. Meanwhile, her daughter Marlowe radiated charm in her pink attire, echoing her mother’s elegance.

Sienna was joined by her co-stars, including Kevin Costner, who attended with his daughter Grace. The star-studded event saw glamorous appearances from Ella Hunt, Abbey Lee, and Jena Malone, each stunning in semi-sheer pastel gowns. The cast’s cohesive presence underscored the camaraderie behind the scenes of Horizon: An American Saga.

Notably, Sienna received support from her friend Alexa Chung, who is dating Sienna’s ex-partner, Tom Sturridge. Alexa’s attendance underscored the amicable relationship between the two, reflecting a supportive and loving family dynamic. The premiere also saw appearances from Julianne Moore, Michelle Yeoh, Candice Swanepoel, and Camille Rowe, each dazzling in their respective ensembles.

These celebrities added to the allure of the.