Brad Pitt used his time onstage at the National Board of Review Annual Awards Gala in New York on Wednesday night to pay tribute to fellow actor Bradley Cooper for helping him to get sober.

During the ceremony at Cipriani 42nd Street, Cooper presented Pitt with the Best Supporting Actor award for his performance in Once Upon a Time... in Hollywood. The winners in the various categories had been announced in December.

People magazine reports that as Pitt accepted his award from Cooper, he said: "Bradley just put his daughter to bed and rushed over here to do this. 

"He's a sweetheart. I got sober because of this guy and every day has been happier ever since."

Speaking to the New York Times last September about his sobriety, Pitt said: "I removed my drinking privilege."

The 56-year-old explained that he started attending all-male Alcoholics Anonymous meetings because he had "taken things as far as I could take it".

"You had all these men sitting around being open and honest in a way I have never heard," he recounted. "It was this safe space where there was little judgment, and therefore little judgment of yourself."

Brad Pitt as Cliff Booth in Once Upon a Time... in Hollywood

Despite the success Pitt is enjoying with Once Upon a Time... in Hollywood - also winning Best Supporting Actor at the Golden Globes on Sunday - he told the New York Times that he would be making fewer films in the future.

"It'll be fewer and farther in between for me, just because I have other things I want to do now," he explained. 

"When you feel like you've finally got your arms around something, then it's time to go get your arms around something else."

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The National Board of Review winners in full:

Best Film: The Irishman

Best Director: Quentin Tarantino, Once Upon a Time... in Hollywood

Best Actor: Adam Sandler, Uncut Gems

Best Actress: Renée Zellweger, Judy

Best Supporting Actor: Brad Pitt, Once Upon a Time... in Hollywood

Best Supporting Actress: Kathy Bates, Richard Jewell

Best Original Screenplay: Josh Safdie, Benny Safdie, Ronald Bronstein, Uncut Gems

Best Adapted Screenplay: Steven Zaillian, The Irishman

Breakthrough Performance: Paul Walter Hauser, Richard Jewell

Best Directorial Debut: Melina Matsoukas, Queen & Slim

Best Animated Feature: How to Train Your Dragon: The Hidden World

Best Foreign Language Film: Parasite

Best Documentary: Maiden

Best Ensemble: Knives Out

Outstanding Achievement in Cinematography: Roger Deakins, 1917

NBR Icon Award: Martin Scorsese, Robert De Niro, Al Pacino

NBR Freedom of Expression Award: For Sama

NBR Freedom of Expression Award: Just Mercy

Top Films
Dolemite is My Name
Ford v Ferrari
Jojo Rabbit
Knives Out
Marriage Story
Once Upon a Time... in Hollywood
Richard Jewell
Uncut Gems

Top 5 Foreign Language Films
Invisible Life
Pain and Glory
Portrait of a Lady on Fire

Top 5 Documentaries
American Factory
Apollo 11
The Black Godfather
Rolling Thunder Revue: A Bob Dylan Story by Martin Scorsese

Top 10 Independent Films
The Farewell
Give Me Liberty
A Hidden Life
The Last Black Man in San Francisco
The Nightingale
The Peanut Butter Falcon
The Souvenir
Wild Rose

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