Scarlett Johansson wears curve-hugging Balmain black dress

Buckle up — curves ahead.

Scarlett Johansson made a polished appearance on “The Late Show with Stephen Colbert” Monday night in a bodycon Balmain strapless knit midi dress ($5,000) with subtle contour paneling.

She accessorized with the French label’s wide black leather Anthem belt ($750) accented with an oversized gold buckle, cutting an elegant figure on the streets of Manhattan as she arrived at the studio.

The “Black Widow” actress, 40, complemented the outfit with gleaming gold jewels, including Sidney Garber’s Collana D’Oro necklace ($28,500) and Rolling bracelet ($29,500), and finished the look with a classic red lip and sleek blowout.

The look was masterminded by Kate Young, the Hollywood stylist who also works with clients like Julianne Moore and Dakota Johnson.

ScarJo has kept Young particularly busy in recent months, as the movie star has been on the red carpet circuit promoting several projects.

Her latest project is the star’s directorial debut, “Eleanor the Great,” which hits theaters Sept. 26. The film stars June Squibb as Eleanor Morgenstein, a 94-year-old woman who moves to New York City to live with her daughter after her best friend Bessie, a Holocaust survivor, dies.

In her grief and loneliness, Eleanor ends up in a Holocaust survivors’ support group at the Jewish Community Center and begins telling Bessie’s harrowing survival stories as if they were her own.

The story was inspired by screenwriter Tory Kamen’s grandmother, who started life anew in Manhattan at age 95, and Johansson dedicated the film to her own Jewish grandmother, Dorothy.

Earlier this month, Johansson stepped out at the Toronto International Film Festival premiere in a pale pink Valentino gown that showed off her collection of back tattoos.

The delicate dress was cut low in the back, revealing the trail of roses climbing up ScarJo’s spine and the little lamb under her right shoulder blade.