On pulling out of a play because of pay inequality: “The producer wouldn’t pay equally. He wouldn’t pay me within a million miles of what the male actor was being paid. And women always have to do more publicity than the men. The only way is to make a stand. We are going to have to make sacrifices to make change. I want to turn up and feel dignified.”
On being a mother: “[It is] the most profoundly, deeply affecting thing. I didn’t feel I had proper roots till I had her; I was whimsical and spontaneous. I feel anchored in the way I was looking for, and our life is beautiful and simple. We go to the park; I take her to school; we go to the country and she gets muddy and rides ponies. You try to re-create the magic you remember.”
On her second project with Bradley Cooper, Burnt: “Best friends—we laugh a lot; he is loyal and kind and has no concept of his own brilliance.”
For more from Sienna, visit MarieClaire.com.