Sienna Miller, 41, welcomes baby with boyfriend Oli Green

Sienna Miller has just welcomed her baby with her boyfriend, Oli Green.

The mum-of-two, 41, was spotted out and about as she cradled her newborn daughter during a stroll with Oli, 27, on Wednesday (2 December).

The pair have been an item after they were first introduced at a mutual friend’s Halloween party two years back.

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They shared a smooch during the Halloween party in 2021, yet Sienna was initially going to write off the chance of a proper relationship with Oli due to their age gap.

"I was like, 'This is absurd. This will not go anywhere'," she told British Vogue. "And then he worked hard to persuade me to go out for a drink with him."

She added: "I would imagine it would be complicated for anyone to get their head around, but there's been nothing but love and joy.

"I don’t think you can legislate on matters of the heart. I certainly have never been able to."

She revealed that there's a possibility that Oli, who stars in the latest season of The Crown, may one day wish to be with someone closer to his age. However, for Sienna, that specific worry 'cuts both ways' in the relationship.

"For Oli," she explained, "it is real that I might want to be with someone older."

She went on to comment about the generational differences, noting that Gen Z have a more of an 'awareness' of relationship dynamics between men and women as the younger generation don't have the same 'misogyny that is ingrained' in men her age.

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"I see it with Oli’s friends,” Sienna went on. "There’s awareness of the dynamics that enter relationships between men and women now that we just didn’t have 20 or 25 years ago.

"I feel like my whole adolescence was dodging bullets and advances in a really delicate way, to not offend somebody. Whereas the girls that he grew up with, they’re probably like, 'No – no, thank you. Moving on'."

Gushing about Oli, Sienna - who also shares 11-year-old daughter Marlowe with ex Tom Sturridge - praised: "He’s the kind of guy you could just bring anywhere, and everyone would love him."

The happy couple have since relocated from London to New York, with Sienna saying she's happy with the 'open' aspect of her future.

"I like that it's open," she said. "I don't do well when life is prescribed."

Congratulations Sienna and Oli!

Topics: Celebrity, Sex and Relationships, Parenting, Pregnancy

Rhiannon Ingle

Rhiannon Ingle is a Journalist at LADbible Group. She graduated from the University of Manchester in 2021 in English Literature. Alongside her studies, she was the Lifestyle Editor of The Mancunian, the largest student newspaper in the United Kingdom. Her favourite topics to write about include sex and relationships, bizarre lifestyle trends and all things travel.