sienna miller has welcomed her third child, and the baby is her second with boyfriend Oli Green. At 44, she added another child to a family timeline that already includes 13-year-old Marlowe and a two-year-old daughter with Green.
“It’s happened,” Miller said, adding, “I have a tiny baby next door.” She also said, “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.”
Oli Green and the 14-year gap
Miller has been building this family with Green for several years, and the pair already share a daughter whose name has not been shared publicly. She said, “Quite quickly, I fell in love,” when reflecting on the relationship, even after joking, “F***! Why are you young? That’s so annoying.”
Her comments around Green also point to one practical friction in the story: the 14-year age gap. Miller has said there is “a difference in the way that generation of men respect women,” while also describing Green as “very wise and well-adjusted.”
40, 42, and 44
Miller had already put her family plans on the record in November 2022, saying she froze her eggs when she turned 40 because she knew she wanted a bigger family. She also told British Vogue then that she imagined being married with three kids and being a great mum.
She has since described the later stretch of motherhood as easier than the first: “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.” That is the clearest read on why the third child fits the path she had been laying out in public.
Marlowe and the new baby
Miller’s family now spans Marlowe, her 13-year-old daughter with ex Tom Sturridge, her two-year-old daughter with Green, and the newborn she just described as “a tiny baby next door.” For readers tracking her public timeline, the update is simple: the family she said she wanted at 40 is now the family she has at 44.
