While Martin Scorsese's latest film Killers of the Flower Moon has some huge names in its cast, including Leonardo DiCaprio and Robert De Niro, it's their co-star Lily Gladstone that (deservedly) takes up all of the spotlight - particularly as she's been nominated for Best Actress at the Oscars, and the odds are in her favor to win it.
If she wins, Lily will be the first first Native American to win an acting award at the Oscars.
The actress, 37, stars in the movie as Mollie Burkhart, the wife of Leo's character Ernest Burkhart, who – spoilers ahead – is complicit in the real-life slaughter of Native Americans across Osage Nation in Oklahoma throughout the 1920s.
While their characters' relationship was complicated, offscreen, Leo's support of Lily's ascent to stardom has been unwavering.
Despite Leo's own A-Lister status, last month he maintained to British Vogue: "Lily is absolutely astonishing in this movie," and declared: "She carries the entire film and the story."
Further raving about Lily's stellar performance to The Hollywood Reporter back in May, the Catch Me If You Can actor stated: "Lily has amazing presence and strength."
He continued: "She spent months studying Mollie Burkhart and her family, working extensively to understand the intricacies of this woman, her relationship with Ernest and her legacy within the Osage community."
The Oscar winner added: "As a Native actor, in a lot of ways, she became a source of guidance for all of us, Scorsese included, in terms of how we told the story."
As in the film, in real life, Lily is of Native American descent, specifically of Siksikaitsitapi and NiMíiPuu heritage. Her mother is white, while her father is Blackfeet and Nez Perce, and she grew up on the Blackfeet Nation reservation in Browning, Montana until she was 11 years old.
Leo also credits Lily and her heritage as part of why the Killers of the Flower Moon script was reworked from a film that erred on the side of Hollywood's usual white-savior narrative, to one that accurately highlighted the tragedy that was the Reign of Terror it depicts.
MORE: Prince Charles' photo with Leonardo DiCaprio has royal fans saying the same thing
"It just didn't feel like it got to the heart of it," Leo also told British Vogue about the initial idea, before revealing: "We weren't immersed in the Osage story. There was this tiny, small scene between Mollie and Ernest that provoked such emotion in us at the reading, and we just started to penetrate into what that relationship was, because it was so twisted and bizarre and unlike anything I've ever experienced before."
Leo and Lily's commitment and on-screen chemistry – especially Lily's own Oscar-buzzy performance – has already gained high-praise from critics and netizens alike, who across social media have shared admiration like: "So much life behind Lily Gladstone's eyes in any given moment of Flower Moon. What a rich performance, it's been on my mind all day," and: "Lily Gladstone in Killers of the Flower Moon is one of the most restrained, utterly devastating turns I've ever seen in a major Hollywood movie… She dominates it."
Get the lowdown on the biggest, hottest celebrity news, features and profiles coming out of the U.S. Sign up to our HELLO! Hollywood newsletterand get them delivered straight to your inbox.