44-year-old Sienna Miller has become a mother for the third time.

Sienna Miller has become a mother for the third time. The 44-year-old actress announced the birth of her second child with her 29-year-old boyfriend, Ollie Green, in an interview with E! News.
"It happened. There's a tiny baby in the next room. It seems like putting words together has become a little more difficult. I barely sleep, but I love my baby madly," she said, without revealing the newborn's gender or name.
As a reminder, Sienna Miller's third pregnancy was announced in early December: she walked the red carpet at the 2025 Fashion Awards with a noticeably rounded belly. She already has a daughter with model Green, whom she has been dating since 2022, who was born in 2023. The girl's name is still being kept secret. Sienna also has a 12-year-old daughter, Marlowe, from a previous relationship with actor Tom Sturridge.
Miller previously dated Jude Law. Rumors suggest the couple split due to the actor's infidelity with the nanny of his children from previous marriages. However, they reunited after the split before finally separating in 2011. Sienna also had relationships with married actor Balthazar Getty and gallery owner Lucas Zwirner, and is also rumored to have had brief romances with Orlando Bloom and Leonardo DiCaprio.
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