Academy Award nominees America Ferrera, Billie Eilish and Finneas O'Connell were all smiles as they posed for photos together on the red carpet.

Ferrera, who is nominated for best supporting actress for her performance in "Barbie," stepped out in a pink gown, while Eilish wore a black blazer with a white button down shirt and a black and white skirt with a matching houndstooth purse. O'Connell wore a classic suit with a black bowtie.

Eilish and O'Connell's song "What Was I Made For?" from "Barbie" is nominated tonight for best original song.

Amid the ongoing Israel-Hamas war, "Anatomy of a Fall" actors Milo Machado-Graner and Swann Arlaud wore Palestinian flag pins on the Oscars red carpet.

The five filmmakers nominated in the best director category include Martin Scorsese, Justine Triet, Christopher Nolan, Yorgos Lanthimos and Jonathan Glazer.

Scorsese's nomination for the crime drama "Killers of the Flower Moon" is his 10th best director nomination. He won best director in 2007 for "The Departed."

Nolan, who directed and wrote "Oppenheimer," and Lanthimos, who directed "Poor Things," are up for best director at the Oscars for the second time in their careers.

Triet, who directed and co-wrote "Anatomy of a Fall," and Glazer, who directed and wrote "The Zone of Interest," are first-time Oscar nominees.

Some of this year's presenters at the Oscars include Matthew McConaughey, Zendaya, Dwayne Johnson, Jennifer Lawrence, "Wicked" co-stars Cynthia Erivo and Ariana Grande, and more.

Last year's quartet of Oscar winners for acting -- Michelle Yeoh, Ke Huy Quan and Jamie Lee Curtis of "Everything Everywhere All at Once" and Brendan Fraser of "The Whale" -- will also take the stage.

Check out a full list of this year's presenters here.

Billie Eilish and Finneas O'Connell won the Oscar for best original song.

The sister and brother duo's hit song, "What Was I Made For?" from "Barbie," marked the duo's second Oscar win for best original song. They previously won the award in 2022 for their song "No Time To Die" from the James Bond film of the same name.

During their acceptance speech, Eilish said she felt "so incredibly lucky" and "honored" to take home the award.

"Thank you for this," she said. "I'm so grateful for this song and for this movie and the way that it made me feel, and -- this goes out to everyone who was affected by the movie and how incredible it is."

Other nominees in the category included "The Fire Inside" by Diane Warren from "Flamin' Hot," "I'm Just Ken" by Mark Ronson and Andrew Wyatt from "Barbie," "It Never Went Away" by Jon Batiste from "American Symphony" and "Wahzhazhe (A Song For My People)" by Scott George from "Killers of the Flower Moon."