"We've got to be in control and it's a constant battle," she adds. "Often, we're exploited, our sexuality is relied on to promote a film, and I think that probably comes with much more of a cost than we allow ourselves to believe. And I've had it with all of that. Being dignified is better for your soul."
Miller goes on to explain why she walked away from the New York stage project earlier this year (15), admitting she was offered "less than half" of the pay her male co-star was to receive.
"It was a two-hander, we'd be on stage for the same amount of time doing the same job, and they said I would not be paid within a hundred miles of what he was going to have," she explains.
The British actress also talks about how becoming a mother to daughter Marlowe in 2012 changed the way she picks roles.
"I only want to work for amazing, capable directors... Otherwise the time away from my daughter is not worth it," she adds. "I don't think I am going to gamble as much as I used to, or pick a role just because it's a great role. If the film is in the wrong hands it won't be right."
- WENN