There are five songs nominated for best original song tonight and they will all be performed during the ceremony.

"Barbie" has two songs from the film battling it out for the Oscar: Mark Ronson and Andrew Wyatt's power ballad "I'm Just Ken" and Billie Eilish and Finneas O'Connell's "What Was I Made For?"

"Wazhazhe (A Song for My People)" by Scott George from "Killers of the Flower Moon" is also nominated, as well as Diane Warren's "The Fire Inside" from the film "Flamin' Hot" and "It Never Went Away" by Jon Batiste and Dan Wilson from the documentary "American Symphony."

Read more about each song here.

Rita Moreno arrived at the 2024 Oscars in a stunning black gown, sporting a short black wig.

Speaking to ABC News, the EGOT winner said her wig was a tribute to the late Broadway star Chita Rivera, who died in January at age 91. Moreno paired her dress, which featured an elaborate design on top, with silver earrings.

Moreno, who is a presenter tonight, was all smiles as she walked the red carpet with her daughter Fernanda Luisa Gordon, whom she shares with late husband Leonard Gordon.

Valerie Bertinelli stepped out on the Oscars red carpet with her son Wolfgang Van Halen and his wife Andraia Allsop.

The "One Day at a Time" and "Touched by an Angel" actress wore a cream suit while Van Halen and Allsop, who married in October 2023, wore all-black looks for the star-studded evening.

Jamie Lee Curtis and more have arrived at the Oscars.

Curtis, who won best supporting actress at last year's Oscars for her performance in "Everything Everywhere All at Once," stepped out on the red carpet in a black gown.

Other stars who have arrived so far include Oscar winner Marlee Matlin, who stepped out on the carpet in a sparkling lilac gown, and Laverne Cox, who walked the carpet in a gown with a gold corset top and black skirt.

Check out all of tonight's fashion moments here.