Sienna Miller Explains Why Having a Baby in Her 40s ‘Is So Much Easier’ Than Being a Mom at 29

Sienna Miller Explains Why Having a Baby in Her 40s 'Is So Much Easier' Than Being a Mom at 29

Sienna Miller said she thinks "being pregnant in your 40s is the best" in a new interview

People Sienna MillerCredit: Frazer Harrison/Getty

NEED TO KNOW

  • 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 Milleris 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 inGlamour. "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 boyfriendOli Green.

TheAnatomy of a Scandalactress 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?"

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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.

Sienna Miller attends The Fashion Awards 2025 presented by Pandora at the Royal Albert Hall on December 01, 2025 in London, England.Credit: Samir Hussein/WireImage

On March 20, the21 Bridgesactress 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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