Sienna Miller has revealed her late co-star Chadwick Boseman docked his own pay in order to top-up her salary on the film 21 Bridges.
In an interview with Empire, Miller said that Boseman was determined to make sure she was paid "what she was worth", even if it meant earning less himself.
"This was a pretty big-budget film, and I know that everybody understands about the pay disparity in Hollywood, but I asked for a number that the studio wouldn't get to," Miller said.
"And because I was hesitant to go back to work and my daughter was starting school and it was an inconvenient time, I said: 'I'll do it if I'm compensated in the right way'; and Chadwick ended up donating some of his salary to get me to the number that I had asked for.
"He said that that was what I deserved to be paid."
Miller called the move "about the most astounding this she's experienced", adding "that kind of thing just doesn't happen" in Hollywood.
"He said, 'You're getting paid what you deserve, and what you're worth.' It's just unfathomable to imagine another man in that town behaving that graciously or respectfully."
The American Sniper star said that she had told other male actor friends about Boseman's generosity, only to have them "go very, very quiet".
"[They] go home and probably have to sit and think about things for a while."
Miller maintained there was "no showiness" in Boseman's actions, insisting it was "a testament to who he was".
Boseman died in August aged 43 years old, after a long battle with colon cancer.