Sienna Miller Welcomes Third Child with Oli Green

Sienna Miller, the 44-year-old actress, has welcomed her third child, her second with boyfriend Oli Green.

Miller shared the news during a promotional interview for her upcoming film "Jack Ryan: Ghost War" with E! News. "It's happened. I have a tiny baby next door," she 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." She provided no further details about the newborn, including its sex or name.

The couple already shares a two-year-old daughter, whose name has not been disclosed publicly. Miller is also mother to 13-year-old Marlowe, whom she shares with former partner Tom Sturridge. The former couple dated for four years before splitting in 2015 and remain on good terms while co-parenting.

Miller first revealed her latest pregnancy in December by debuting her baby bump on the red carpet at the Fashion Awards in London. She and Green, a 29-year-old actor and model known for roles in "A Good Person" and "The Crown," walked the carpet together. This marked her second public pregnancy announcement at a fashion event; she debuted her bump with their first child at the Vogue World show in September 2023.