British star Olivia Colman is officially an Oscars Favourite - winning the award for best actress and promising "snogs" in an acceptance speech that had the Academy on its feet.
Her win, beating stars including Lady Gaga and Glenn Close, follows Golden Globe and BAFTA gongs for her comedic performance as Queen Anne.
Despite The Favourite and Roma both having 10 nominations, the best actress prize was the only win for the British film.
Delighted but shocked after receiving a standing ovation, Colman told the audience: "Oooh. It's genuinely quite stressful."
The 45-year-old quipped "this is not going to happen again" and also promised a "massive snog" to anyone she forgot to mention in her speech.
Green Book was named best picture, while Rami Malek took home the best actor award for his portrayal of Freddie Mercury in Bohemian Rhapsody.
It was one of four awards for the Queen biopic, which took home the biggest haul of trophies.
In his speech, Malek said: "I may not have been the obvious choice, but I guess it worked out.
"Thank you, Queen, thank you, guys, for allowing me to be the tiniest part of your phenomenal, extraordinary legacy. I am forever in your debt."
Alfonso Cuaron was named best director for black and white, Spanish-language film Roma, which also won the awards for best foreign film and best cinematography.
And it was a history-making night for Black Panther, which also won three prizes - two of which went to black winners for the first time ever.
The supporting actor and actress prizes went to Mahershala Ali for his role in Green Book, and Regina King for If Beale Street Could Talk.
Another standout moment from the night was BlacKkKlansman's win for best adapted screenplay, which saw veteran director Spike Lee receive a standing ovation as he finally picked up his first competitive Oscar after 40 years in the industry.
Lee jumped into the arms of award presenter Samuel L Jackson after his name was called, and said "do not turn that motherf****** clock on", to make sure he could make the most of the allotted time for his speech.
However, he was not happy after losing out in the best picture category to Green Book, saying after the ceremony that "the ref made a bad call".
Green Book was the surprise winner of best picture, an award largely expected to be handed to Roma.
The film about a black jazz musician and a white driver travelling through the segregated US deep south also won the best supporting actor Oscar for Ali, as well as best original screenplay.
A Star Is Born missed out on acting awards, but its standout song, Shallow, was named best original song, following a performance by stars Lady Gaga and Bradley Cooper.
Gaga addressed her director and co-star Cooper as she collected the prize, saying: "Bradley, there is not a single person who could have sang this song with me but you. Thank you for believing in me."
In her speech, the singer said: "I've worked hard for a long time. This is not about winning, what it's about is not giving up. If you have a dream fight for it.
"It's not about how many times you are rejected and how many times you fall down, it's how many times you stand up and keep going."
© Sky News 2019