The 28-year-old revealed some of her male co-actors have even taken pay cuts to make sure she gets the equal money as them.
In an interview to Out magazine's Andrea Riseborough, she said, "In my career so far, I've needed my male co-stars to take a pay cut so that I may have parity with them. And that's something they do for me because they feel it's what's right and fair.
She continued, "If my male co-star, who has a higher quote than me but believes we are equal, takes a pay cut so that I can match him, that changes my quote in the future and changes my life. And this is Billie Jean's feminism, and I love it-she is equality, man: equality, equality, equality."
The actress said her male couterparts have not done it to show that "women are this and men are that" but because they believe in equality.