The actress shares a daughter with Green and is also mom to daughter Marlowe, 13, with ex Tom Sturridge
Credit: Lucy North/PA Images via Getty
NEED TO KNOW
- Sienna Miller welcomed her third baby, her second with boyfriend Oli Green, but has not shared the baby’s name or sex
- The actress recently reflected on the ease of having children in her 40s compared to her earlier pregnancies in her 20s
- Miller returned to Instagram in March after an 8-year hiatus, debuting her baby bump at the 2025 Fashion Awards in London
Sienna Miller is a mom again!
The actress, 44, welcomed her third baby, her second with boyfriend Oli Green, 29, she revealed in a recent interview with E! News.
"It's happened. I have a tiny baby next door," she shared, not revealing the sex or name of her little one.
"It feels like stringing sentences together is a bit challenging,” she teased. “I’m on very little sleep, but I’m madly in love with my baby.”
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Credit: Karwai Tang/WireImage
This is the third baby for Miller, who welcomed a daughter with Green at the end of 2023, and is also mom to daughter Marlowe, 13, whom she shares with ex Tom Sturridge.
On March 20, the 21 Bridges actress returned to Instagram after an 8-year hiatus with a post showing off her baby bump.
Miller first 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.
In a recent interview with Glamour, Miller opened up about why she thinks "being pregnant in your 40s is the best."
"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.'"
Credit: Arturo Holmes/FilmMagic
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?"
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