Last summer, Bella Hadid — already a supermodel on the rise — staked her claim to an international audience with a stunning, showstopping Alexandre Vauthier design. The custom red silk dress clung to her body, defying gravity; a slit skirt went all the way up (thigh-high doesn't cover it) and elegant narrow straps held it all in place. While the Cannes Film Festival is something of a playground, red carpet-wise, there were few last season who achieved a fashion moment to rival Hadid's. Then, come July, Vauthier showed an upgraded version of that same dress on the runway at his Fall 2016 Couture show — drenched in black and olive green double-sided sequins. Hadid herself closed the show. But red carpet-wise, that look has been done; for a gala dinner in Geneva, Switzerland, on the occasion of the Salon International de la Haute Horlogerie, actress Naomie Harris elected another, equally daring look from the same collection, to dramatic effect.

Naomie Harris in Alexandre Vauthier at IWC Schaffhausen's SIHH gala in Geneva, Switzerland, January 2017.

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Who: Naomie Harris.

When: Tuesday, January 17.

Where: A gala dinner hosted by IWC Schaffhausen at the Salon International de la Haute Horlogerie in Geneva, Switzerland.

What: A white dress with a thigh-high slit, plunging neckline, and wide black sash at the waist from Alexandre Vauthier's Fall 2016 couture collection, combined with black silk sandals.

Why: While women like Lily-Rose Depp and Anna Cleveland are making menswear their own thanks to designers like Karl Lagerfeld at Chanel and Dsquared2, Naomie Harris is making menswear, womenswear, with designs from Alexandre Vauthier. Her white Vauthier gown has the labels of a tuxedo jacket, a knotted belt reminiscent of a cummerbund, and a daring neckline and hemline that's all womenswear. Paired with a red lip and elegant hair, it's a white-tie affair in the Swiss timekeeping capital. Our only recommendation? Keep the fishnets, with which the dress was first shown on the runway. You might want them soon, Naomie.

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