Charlize Theron is in the building.

The actress was a total bombshell as she arrived to the 2020 Academy Awards at Dolby Theatre in Hollywood on Sunday. Theron, 44, looked stunning, wearing a black Dior Haute Couture gown with one off-the-shoulder strap and a thigh-high slit and long train. Theron walked the red carpet with her mother, Gerda, who looked equally beautiful in a dark blue dress.

RELATED: Natalie Portman Honors Snubbed Female Directors With 2020 Oscars Look

Theron is nominated for Best Actress for her role as Megyn Kelly in “Bombshell.” She is up against Cynthia Erivo (“Harriet”), Scarlett Johansson (“Marriage Story”), Saoirse Ronan (“Little Women”) and RenĂ©e Zellweger (“Judy.”)

Photo: Jordan Strauss/Invision/AP
Photo: Jordan Strauss/Invision/AP
Photo: REUTERS/Eric Gaillard
Photo: REUTERS/Eric Gaillard

This is Theron’s third Oscar nomination. She was nominated — and won — in 2004 for her role in “Monster.” Her second nomination came in 2006 for her leading role in “North Country.” Portraying Kelly in “Bombshell” gave Theron a lot of critical praise and accolades, including a Golden Globe, Screen Actors Guild and BAFTA nominations.

RELATED: Margot Robbie Drips in Chanel on 2020 Oscars Red Carpet

Just a couple weeks ago, she discussed her reaction to Kelly’s detailed response to the film, which covers the sexual harassment scandal at Fox News that took place under its former CEO, Roger Ailes.

Kelly and fellow Fox News accusers opened up about what the movie got right and wrong in a 30-minute video posted last week. The group described the fraught “elevator scene” hinted at in the trailer as one of the most emotional moments to watch and discussed the “demeaning” experiences they went through at the network.

RELATED: Scarlett Johansson Shines in Gold Fringe Bustier Gown at 2020 Oscars

“Listen, this all happened to them. We made the movie about it, and I acted all of that stuff, but this actually happened to all of them,” Theron told “ET.” “To hear them reflect on it and talk about it, and to just hear these continuous stories about how pervasive sexual harassment is in the workplace, it’s emotional.”

See more of “ET”‘s Oscars coverage below.

More from ET

Maya Rudolph and Kristen Wiig Get an Epic Reaction Shot From Billie Eilish While Presenting at Oscars

Oscars 2020: The Complete Winners List

Laura Dern Pays Tribute to Her Parents While Winning Her First-Ever Oscar for ‘Marriage Story’