Sienna Miller has unlocked a new appreciation for motherhood.  

As the 21 Bridges actor prepares to welcome her third baby, her second with boyfriend Oli Green, she detailed how expanding her family in her 40s has positively changed her life. 

“Yes, it is the best,” Sienna told Glamour in an interview published March 23. “Having had a baby at 29, and then having a baby at 42, and now 44, it’s so much easier when you don’t have the conflict of feeling scattered and like you want to be doing X, Y, Z.”

“If I’m in bed at 9 p.m. with a book, I’m so happy now,” she continued. “And now I’ve got the excuse to do it. Life is in a more grounded space.”

Indeed, the Anatomy of a Scandal alum—also mom to a 2-year-old daughter with Oli as well as Marlow, 13, with ex-boyfriend Tom Sturridge—admitted she didn’t feel this level of serenity during her first pregnancy as she was overthinking about her future.  

“I think the 30s are chaos. You’re like, ‘I want to settle down. I want kids,’” she explained. “But by the time you hit 40, you’re like, ‘I kind of know who I am. I don’t really give a s–t about what anyone else thinks.’ I’m a much more grounded human. We don’t judge men who are having kids in their 80s. Why on earth is there any sort of narrative?”