Road drama Nomadland was the big winner at the Oscars in Los Angeles on Sunday night, winning Best Picture, Best Director for Chloé Zhao and Best Actress for Frances McDormand. There was a shock in the Best Actor category, as the late Chadwick Boseman was not posthumously honoured as had been expected.

It was Nomadland star McDormand's third Best Actress Oscar - she previously won for Three Billboards Outside Ebbing, Missouri and Fargo - and fourth Academy Award, as she also shared in the Best Picture win as one of the producers of Nomadland.

"I have no words, my voice is in my sword, we know the sword is our work," said McDormand on the stage. "And I like work. Thank you for knowing that and thanks for this."

(L-R) Frances McDormand and David Strathairn in Nomadland

Nomadland filmmaker Chloé Zhao made Oscars history by becoming the first woman of colour to win the Best Director award. She is only the second woman in Oscars history to win Best Director.

Like star McDormand, Zhao also shared in the Best Picture win as one of the producers.

Minari star Yuh-Jung Youn's Best Supporting Actress win was the first for a Korean actor and only the second for an Asian actor.

The big shock on the night was that Chadwick Boseman was not posthumously honoured with Best Actor for his performance in the music-drama Ma Rainey's Black Bottom. The award went to Anthony Hopkins for his role in the dementia story The Father.

Fans took to social media after the result was announced to express their anger and dismay that voters had failed to take the opportunity to recognise Boseman, who lost his battle with cancer last August. At 83, Hopkins becomes the oldest winner of an acting Oscar. He was not present at the ceremony.

Chadwick Boseman in Ma Rainey's Black Bottom

Hairstylists Mia Neal and Jamika Wilson became the first Black women to win a Best Makeup and Hairstyling Oscar for their work on Ma Rainey's Black Bottom. Travon Free became the first Black winner of Best Live-Action Short for his work with co-director Martin Desmond Roe on Two Distant Strangers.

Irish hopes were focussed on the Best Animated Feature category, but there was disappointment for Wolfwalkers from Kilkenny's Cartoon Saloon, with the Oscar going to the favourite, Pixar's Soul.

The ceremony itself failed to live up to its billing of "the aesthetic of a film as opposed to a TV show"; it was a low-key and slow affair, lacking the flow and standout moments normally associated with the biggest night in Hollywood's calendar. There were no musical performances.

A number of winners, including Judas and the Black Messiah's Best Supporting Actor Daniel Kaluuya, spoke of racial equality and social justice as they accepted their awards.

"Refuse hate," said writer-director Tyler Perry as he received the Jean Hersholt Humanitarian Award - the most succinct exhortation during an acceptance speech.

Oscar-winner Regina King opened the ceremony at Union Station in Los Angeles by saying: "It has been quite a year and we are still smack dab in the middle of it."

Referencing the conviction of former police officer Derek Chauvin over the death of George Floyd, she added: "If things had gone any different in Minneapolis I might have traded in my heels for marching boots."

You can watch the 93rd Academy Awards on RTÉ2 and RTÉ Player from 9:35pm tonight.

The winners in full:

Best Original Screenplay
Promising Young Woman - Emerald Fennell

Emerald Fennell

Best Adapted Screenplay
The Father - Christopher Hampton and Florian Zeller, based on the play by Zeller

Florian Zeller

Best International Feature Film
Another Round (Denmark) - directed by Thomas Vinterberg

Best Supporting Actor
Daniel Kaluuya - Judas and the Black Messiah

Daniel Kaluuya

Best Makeup and Hairstyling
Ma Rainey's Black Bottom - Sergio Lopez-Rivera, Mia Neal and Jamika Wilson

Best Costume Design
Ma Rainey's Black Bottom - Ann Roth

Best Director
Chloé Zhao - Nomadland

Chloé Zhao

Best Sound
Sound of Metal - Jaime Baksht, Nicolas Becker, Philip Bladh, Carlos Cortés and Michelle Couttolenc

Nicolas Becker

Best Live Action Short Film
Two Distant Strangers - Travon Free and Martin Desmond Roe

Martin Desmond Roe and Travon Free

Best Animated Short Film
If Anything Happens I Love You - Michael Govier and Will McCormack

(L-R) Michael Govier and Will McCormack

Best Animated Feature Film
Soul - Pete Docter and Dana Murray

Dana Murray and Pete Docter

Best Documentary Short Subject
Colette - Alice Doyard and Anthony Giacchino

Best Documentary Feature
My Octopus Teacher - Pippa Ehrlich, Craig Foster and James Reed

Pippa Ehrlich and James Reed

Best Visual Effects
Tenet - Scott R Fisher, Andrew Jackson, David Lee and Andrew Lockley

Scott R Fisher

Best Supporting Actress
Yuh-Jung Youn - Minari

Yuh-Jung Youn

Best Production Design
Mank - Production Design: Donald Graham Burt; Set Decoration: Jan Pascale

Donald Graham Burt and Jan Pascale

Best Cinematography
Mank - Erik Messerschmidt

Erik Messerschmidt

Best Film Editing
Sound of Metal - Mikkel EG Nielsen

Mikkel EG Nielsen

Best Original Score
Soul - Trent Reznor, Atticus Ross and Jon Batiste

(L-R) - Jon Batiste, Trent Reznor and Atticus Ross

Best Original Song
Fight for You from Judas and the Black Messiah - Music by D'Mile and H.E.R.; lyric by H.E.R. and Tiara Thomas

(L-R) - Tiara Thomas, H.E.R, D'Mile

Best Picture
Nomadland - Mollye Asher, Dan Janvey, Frances McDormand, Peter Spears and Chloé Zhao

Best Actress
Frances McDormand - Nomadland

Best Actor
Anthony Hopkins - The Father

Jean Hersholt Humanitarian Award
Tyler Perry
Motion Picture & Television Fund