The actress also opened up about her two adopted daughters, Nancy, 12 and Adelaide, 8, and how she and her husband have been honest with both of them about their biological mothers.

"We have said to them, 'this is your story. We don't have any information about your biological fathers, but we do have a bit about your biological mothers. If you guys want to talk more about them, you can have as much or as little information as you want. Tell us what you're comfortable with knowing'," she said.

She also revealed that their oldest daughter wasn't given a phone, which has not got down well with the kids.

"I know she thinks I'm being a tyrant, but I worry about the effect of social media on kids her age. I watched 'The Social Dilemma'. So I'm like, 'go ahead and hate me. I'm trying to save you!" she said.