The actress is expecting her third child with boyfriend Oli Green, whom she's been dating since 2022
Credit: Frazer Harrison/Getty
NEED TO KNOW
- Sienna Miller said she thinks “being pregnant in your 40s is the best” in a new interview
- Miller is expecting her third baby, and her second with boyfriend Oli Green
- She revealed she froze her eggs when she was in her 30s but “didn’t use them”
Sienna Miller is opening up about experiencing her third pregnancy in her 40s.
Miller, 44, opened up about why she thinks "being pregnant in your 40s is the best" in a new interview published in Glamour. "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," Miller told the outlet.
"If I’m in bed at 9 p.m. with a book, I’m so happy now," Miller continued. "And now I’ve got the excuse to do it. Life is in a more grounded space. I think the 30s are chaos. You’re like, 'I want to settle down. I want kids.'"
Miller is currently expecting her third baby, and second with boyfriend Oli Green.
The Anatomy of a Scandal actress went on to discuss embracing a more relaxed philosophy as she entered her 40s, and how it went into her decision to have her third baby.
"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,'" Miller said. "I’m a much more grounded human."
The model and actress then posed a poignant question.
"We don’t judge men who are having kids in their 80s," Miller said. "Why on earth is there any sort of narrative?"
Miller also shared that she was glad she froze her eggs, even though she "didn't use them."
"I was really fortunately able just to get pregnant, but it was an existential relief having done that in my late 30s," Miller added of conceiving her third baby.
Credit: Samir Hussein/WireImage
On March 20, the 21 Bridges actress returned to Instagram following an 8-year-hiatus, with a post in which she showed off her baby bump.
Miller initially debuted her baby bump at the 2025 Fashion Awards in London at the Royal Albert Hall as she walked the red carpet in December 2025.
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This is the third baby for Miller, who welcomed a daughter with Green, 29, at the end of 2023, and is also mom to daughter Marlowe, 13, whom she shares with ex Tom Sturridge.
A rep for Miller did not immediately respond to PEOPLE's request for comment at the time.
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