Elle Fanning Stuns in Simone Rocha Gown and Cartier Diamonds at London Film Festival

Elle Fanning turns heads at the London Film Festival 2025 in a Simone Rocha gown paired with Cartier diamonds and tailored pants.

Elle Fanning has long been a red carpet darling, and at the 2025 London Film Festival, she proved once again why she’s a modern style icon. The actress arrived in an exquisite Simone Rocha creation, a look that blended ethereal femininity with a daring contemporary twist.

The ensemble featured a black tulle gown layered over tailored ivory trousers, a bold styling move that perfectly captured Rocha’s romantic-meets-rebellious design language. The gown’s sheer overlay, detailed with hand-appliquéd floral motifs and voluminous sleeves, exuded delicate drama, while the structured pants grounded the look in sleek sophistication.

For accessories, Fanning wore Cartier high jewelry, including a dazzling diamond choker and matching earrings that lit up the red carpet under the flashbulbs. Her platinum-blonde hair was swept into a clean bun, allowing the intricate neckline and shimmering diamonds to take center stage.

Her makeup — softly contoured cheeks, petal-pink lips, and a subtle smoky eye — balanced the dark romanticism of her outfit with youthful radiance. Completing the look were pointed satin heels and a black satin clutch, perfectly harmonizing with the gown’s layered textures.

Fashion critics hailed the look as one of the festival’s standouts — a seamless blend of couture craftsmanship and avant-garde poise. Fanning’s fashion choices consistently challenge convention, and this latest appearance only cements her place as one of Hollywood’s most fearless and refined dressers.