There were two big shocks at the Oscars in Hollywood on Sunday night as Olivia Colman won Best Actress for her role in Irish co-production The Favourite, and Green Book saw off the challenge of the much-fancied Roma to take Best Picture.

Colman's Best Actress win for The Favourite was the sole award for the dark comedy, which had tied with Roma for the most nominations, ten. On the night in Hollywood's Dolby Theatre, Freddie Mercury biopic Bohemian Rhapsody was the biggest winner with four awards, including Best Actor for star Rami Malek. 

Colman's Best Actress win was a shock because most expected Glenn Close - a seven-time Oscar nominee - to finally take home the award for her performance in The Wife

Colman paid tribute to her fellow nominees, hailing them as "extraordinary women" and describing Close as her "idol for so long". 

Best Picture winner Green Book has divided audiences: loved by many for its warmth, criticised by others for being too simplistic and for what they see as a 'white saviour' narrative. But Green Book won the Producers' Guild award in January, and the guild's winner had gone on to take the Best Picture Oscar on 20 occasions since 1990.

Green Book has divided audiences

So it proved on Sunday night, with the Best Supporting Actor (Mahershala Ali) and Screenplay awards also going the way of the 1960s-set road movie.

Rami Malek's Best Actor win for his portrayal of Queen frontman Freddie Mercury in Bohemian Rhapsody rounded off a great night for the crowd-pleasing musical drama, which also took three awards in the technical categories. Accepting his Oscar, Malek said: "I may not have been the obvious choice, but I guess it worked out."

He is the champion - Bohemian Rhapsody's Rami Malek

Roma won Best Director and Best Foreign Language Film, with its director Alfonso Cuarón also picking up the Cinematography Oscar for his work on the semi-autobiographical family drama.

Cuarón's cinematography win meant disappointment for The Favourite's Oscar-nominated Irish cinematographer, Robbie Ryan. The black comedy also lost out on Best Original Screenplay to Green Book.

Accepting his Foreign Language Film Oscar, Roma director Cuarón said: "I grew up watching foreign language films and learning so much from them, like Citizen Kane, Jaws, The Godfather."

Roma director Alfonso Cuarón with his Best Cinematography Oscar

Lady Gaga became an Oscar winner when she shared the Academy Award for Best Original Song for Shallow from A Star is Born. In tears, Gaga told the audience: "It's not about winning, but what it's about is not giving up. If you have a dream, fight for it."

Paying tribute to director and co-star Bradley Cooper, Gaga said: "Bradley, there is not a single person who could have sang this song with me but you. Thank you for believing in me." 

Lady Gaga A Best Original Song winner for Shallow from A Star is Born

If Beale Street Could Talk star Regina King was the first winner of the night, winning Best Supporting Actress. "I'm an example of what it looks like when support and love is poured into someone," said an emotional King while accepting her first Academy Award.

An emotional Regina King accepts her Oscar for Best Supporting Actress

Green Book star Mahershala Ali was named Best Supporting Actor. The award was Ali's second Best Supporting Actor win in three years; he also won for Moonlight in 2017.

In one of the most touching moments of the night, Ali dedicated his win to his grandmother, saying she "has been in my ear my entire life, telling me if I don't at first succeed, try, try again … always pushing me to think positively. She has got me over the hump every step of the way". 

There was joy for BlacKkKlansman director Spike Lee - an honorary Oscar winner in the past - who won his first competitive Oscar with the award for Best Adapted Screenplay.

He jumped into the arms of friend and award presenter Samuel L Jackson, and used his speech to urge people to mobilise ahead of the 2020 presidential election in the US.

An overjoyed Spike Lee is congratulated by Samuel L Jackson

Marvel adventure Black Panther (Costume Design, Production Design, Original Score), Spider-Man: Into the Spider-Verse (Animated Feature) and climbing film Free Solo (Feature Documentary) were also among the winners.

Melissa McCarthy and Brian Tyree Henry get into the spirit of things announcing the Costume Design winner

The Irish animation Late Afternoon from Kilkenny's Cartoon Saloon lost out on Best Animated Short to Disney Pixar's Bao. The controversial Irish short Detainment, which is based on the police transcripts from the James Bulger case, lost out to Skin in the Best Live Action Short category. 

Queen + Adam Lambert opened the show, which had no main presenter after the intended host, Kevin Hart, stepped down when offensive tweets, originally posted between 2009 and 2011, resurfaced

The Oscars are on RTÉ2 on Monday night from 9:30pm - and the speeches are limited to 90 seconds.

Queen's Brian May rocks out

The Winners:

Best Picture
Green Book

Best Director
Alfonso Cuarón - Roma

Best Actress
Olivia Colman - The Favourite

Olivia Colman was The Favourite for Oscar voters

Best Actor
Rami Malek - Bohemian Rhapsody

Rami Malek is congratulated on his win by partner Lucy Boynton

Best Supporting Actress
Regina King - If Beale Street Could Talk

Regina King was widely expected to win Best Supporting Actress for her performance in If Beale Street Could Talk

Best Supporting Actor
Mahershala Ali - Green Book

Mahershala Ali - Now a double Oscar winner

Best Foreign Language Film

The unforgettable Roma

Best Animated Feature
Spider-Man: Into the Spider-Verse (Bob Persichetti, Peter Ramsey, Rodney Rothman, Phil Lord, Christopher Miller)

Like Black Panther, Spider-Man: Into the Spider-Verse has reinvigorated the superhero genre

Best Documentary Feature
Free Solo (Elizabeth Chai Vasarhelyi, Jimmy Chin, Evan Hayes, Shannon Dill)

The Free Solo team scale the Oscar heights

Best Original Screenplay
Green Book (Nick Vallelonga, Brian Hayes Currie, Peter Farrelly)

Mahershala Ali and Viggo Mortensen in Green Book

Best Adapted Screenplay
BlacKkKlansman (Charlie Wachtel, David Rabinowitz, Kevin Willmott, Spike Lee)

An impassioned speech from Spike Lee as he accepts his Best Adapted Screenplay Oscar

Best Documentary Short 
Period. End of Sentence. (Rayka Zehtabchi, Melissa Berton)

A still from Period. End of Sentence. 

Best Live Action Short
Skin (Guy Nattiv, Jaime Ray Newman) 

Best Animated Short 
Bao (Domee Shi, Becky Neiman)

Best Cinematography
Roma (Alfonso Cuarón)

Roma director Alfonso Cuarón and star Yalitza Aparicio on set

Best Original Score
Black Panther (Ludwig Göransson)

Score! Superhero epic Black Panther

Best Original Song
Shallow from A Star is Born (Lady Gaga, Mark Ronson, Anthony Rossomando, Andrew Wyatt)

Lady Gaga and her A Star is Born director and co-star Bradley Cooper perform Shallow at the Oscars

Best Makeup and Hairstyling
Vice (Greg Cannom, Kate Biscoe, Patricia Dehaney)

The transformed man - Christian Bale in Vice

Best Costume Design
Black Panther (Ruth Carter)

Black Panther - honoured for its Costume Design

Best Production Design
Black Panther (Hannah Beachler, Jay Hart)

Jay Hart and Hannah Beachler accept their Oscars for their Production Design on Black Panther

Best Sound Editing
Bohemian Rhapsody (John Warhurst, Nina Hartsone)

Recreating Live Aid in Bohemian Rhapsody

Best Sound Mixing 
Bohemian Rhapsody (Paul Massey, Tim Cavagin, John Casali)

Bohemian Rhapsody was also honoured for Sound Mixing

Best Film Editing
Bohemian Rhapsody (John Ottman) 

Bohemian Rhapsody editor John Ottman was hailed in the industry for pulling the Freddie Mercury biopic together following the firing of director Bryan Singer before filming had concluded

Best Visual Effects
First Man (Paul Lambert, Ian Hunter, Tristan Myles, JD Schwalm)

First Man (Ryan Gosling, pictured) - honoured for its visual effects

Check out the best moments at this year's Oscars here, and take a look at our red carpet gallery here.