Australian Elizabeth Debicki has won her first Golden Globe Award for her role as Diana, Princess of Wales, in The Crown.
She was named best Supporting Actress in a TV series.
The Australian actress, 33, dedicated the award to her godmother who "left us too quickly" and thanked her "pretend children" Ed McVey and Luther Ford who play Prince William and Prince Harry on the show respectively.
Margot Robbie misses out on Globes for Barbie role
Fellow Australian actor Margot Robbie's feel-good movie Barbie was honoured at the Golden Globes, picking up an award for Cinematic and Box Office Achievement.
Collecting the award, star and producer Robbie dedicated the gong to "every single person on the planet who dressed up and went to the greatest place on earth - the movie theatres".
Earlier Robbie lost out in the Best Actress in a musical or comedy, with Emma Stone named the winner for her role as Bella Baxter in Poor Things.
Barbie had been leading the field at the Globes with nine nominations, ahead of Oppenheimer's eight.
Big wins for Oppenheimer
Oppenheimer picked up multiple key wins at the Golden Globes, on a night billed as a celebration of Christopher Nolan's epic and its fellow summer smash hit Barbie.
Dubbed Barbenheimer after they were released on the same weekend and grossed a combined $2.4 billion, the two movies boasted 17 nominations between them at the Globes, which kicked off Hollywood's awards season.
Oppenheimer - which tells the story of the inventor of the atomic bomb took best director for Nolan, as well as acting wins for Cillian Murphy (lead male actor in a drama) and Robert Downey Jr (supporting male actor).
Downey Jr, who plays a powerful politician and bitter adversary opposite Murphy's brilliant scientist J. Robert Oppenheimer, praised the movie as a "masterpiece."
"A sweeping story about the ethical dilemma of nuclear weapons grosses one billion dollars - does that track? No. Unless and because [the film's studio] Universal went all in on Christopher Nolan to direct," he said.
Nolan won best director, fending off Greta Gerwig, who directed Barbie, the leading film heading into the night with nine nominations.
Barbie, which turned nostalgia for the beloved doll into
, and won the award for best song, for a tune written by Billie Eilish.
Even though it claimed the newly created trophy for box office achievement it surprisingly lost out on best screenplay to French courtroom drama Anatomy of a Fall.
That film's director and co-writer Justine Triet said she had assumed that "nobody is going to see this movie" about "a couple fighting, suicide, a dog vomiting... I mean, come on!"
"This movie is about the truth, the impossibility of catching it," she added, as it also won best non-English language film.
Among the other winners were Emma Stone as best comedy actress for her no-holds-barred turn in surreal, sexy bildungsroman Poor Things, and Da'Vine Joy Randolph for her supporting role in prep school comedy "The Holdovers."
Hayao Miyazaki's The Boy and the Heron won best animated film.
