Sienna Miller is also mum to Marlowe, 13, with ex Tom Sturridge as well as another 2-year-old daughter whose name has not been shared publicly
14:30, 11 May 2026Updated 16:06, 11 May 2026
(Image: Corbis via Getty Images)
Sienna Miller has welcomed her third child, and second with boyfriend Oli Green.
“It’s happened” said the 44-year-old actress. “I have a tiny baby next door.” Sienna is also mum to Marlowe, 13, with ex Tom Sturridge as well as another two-year-old daughter whose name has not been shared publicly with Oli, 29.
“It feels like stringing sentences together is a bit challenging. I’m on very little sleep but I’m madly in love with my baby,” she told E! News.
Sienna proudly displayed her bump at the “Vogue World: London” event
Sienna previously said she found having children after 40 much easier than she had in her twenties.
She told Glamour magazine: “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. 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.’ By the time you hit 40, you’re like, ‘I kind of know who I am and I don’t really give a s*** about what anyone else thinks.’
Sienna Miller and her partner Oli Green share a 14 year age gap(Image: Getty Images)
“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?”
Sienna previously revealed that she froze her eggs when she turned 40 because she knew she wanted a bigger family.
“I’d invested what felt like the important years in something that was just a bucket with a hole in it of a person. I wasted time. And I felt like time was really my currency,” she told British Vogue in November 2022. “There was a lot of anxiety. Relationships hadn’t worked out. I imagined that I would be married with three kids, being a great mum.”
When she met now partner, British actor and model Oli, Sienna said she didn’t expect the relationship to become as serious as it did.
“Quite quickly, I fell in love,” said the Alfie star, recalling her surprise when she first discovered her boyfriend’s age. “I wasn’t like, ‘I’m gonna get a younger boyfriend.’ It was more, ‘F***! Why are you young? That’s so annoying.’”
Sienna says she now believes her 14-year age gap with Green has actually been a positive part of their relationship.
“There is a difference in the way that generation of men respect women. It’s specific to him, he is very wise and well-adjusted, but I do believe it’s also that generation. They have grown up with a slightly more level playing field. I see it in his female friends as well as in the men.”