Julia Roberts Talks My Best Friend’s Wedding’s 25th Anniversary

“She’s so big and she’s so clearly this outspoken and opinionated person, but she also was very devoted to her husband and her family,” Roberts said. “She was very shy. She really didn’t like public speaking. There’s all these paradoxes about her that were fun to get to play with.”

Similar to her Gaslit character, Roberts understands the importance of speaking your mind, something she and her husband, Daniel Moder, find “really critical” to teach their kids: twins Hazel and Phinnaeus, 17, and Henry, 14.

“I think it’s our personal responsibility to advocate for ourselves, and I think that my husband and I both are people of strong convictions and opinions and compassions and I think that we try to instill that in our kids as much by example as by preaching,” she said. “It’s an interesting society and culture that they’re coming to age within, and I think that… they bear a huge responsibility—more than I think I did at their age—to speak their minds and speak up for themselves and advocate for the things that they believe in.”

Gaslit premieres April 24 on Starz.