Sienna Miller walked into the 2025 Fashion Awards in London with the kind of quiet certainty that doesn’t need an announcement. A sheer white Givenchy gown did the talking for her, revealing that the 43-year-old is expecting her third child—her second with 28-year-old boyfriend Oli Green.
It’s a new chapter in a life already running at full speed. Miller is mother to 13-year-old Marlowe, from her relationship with Tom Sturridge, and a 23-month-old daughter with Green. The family expansion hasn’t been without adjustment; Miller has been candid about the shift at home. Earlier this year, she said Marlowe needed time to warm up to the idea of being a big sister again, but eventually settled into it. “Now she is in heaven,” Miller told E! News, adding that the toddler “idolizes” Marlowe and lights up whenever she sees her.
Miller has also spoken openly about the pressure women face around fertility in their forties. In a 2022 interview with Elle UK, she called it “a really loud noise,” pointing out the biological reality that shadows that decade. She froze her eggs to give herself some breathing room—an act of self-preservation more than strategy. Since then, her mindset has eased. “If it happens, it happens,” she said at the time. The looming anxiety, she added, has faded.
So when she stepped under the lights at the Royal Albert Hall, the moment felt less like a reveal and more like a woman moving on her own timeline. No theatrics, no speech—just Sienna Miller, steady and self-possessed, carrying the next chapter of her life down a red carpet that’s seen plenty but rarely something this clear and human.
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Last modified: December 3, 2025
