Sienna Miller Announces Third Pregnancy at 2025 Fashion Awards in London

British-American actress Sienna Miller has announced her third pregnancy. The stylish reveal came on the red carpet at the Fashion Awards in London on December 1, 2025. Miller attended the event with her boyfriend, actor Oli Green, and her 13-year-old daughter, Marlowe.

Her announcement instantly became a global news and fashion headline. Miller confidently displayed her baby bump in a sheer white Givenchy gown. This is her second child with Green and her third overall.

A Bold Fashion Statement Redefines Maternity Style

Miller’s choice of outfit made a powerful statement. She wore a diaphanous white gown from Givenchy’s Spring 2026 collection. The sheer, empire-waist design challenged traditional maternity wear norms.

Fashion critics from Vogue and Harper’s Bazaar praised the look. They called it a masterclass in red-carpet pregnancy style. The look blended ethereal glamour with Miller’s signature bohemian edge.

Her appearance highlighted a growing trend among celebrities. More women are choosing to announce pregnancies through major public appearances. This turns a personal moment into a celebrated public event.

Navigating Motherhood and Public Scrutiny in Her Forties

Miller has been open about her journey to motherhood later in life. In past interviews with Elle UK, she discussed freezing her eggs at age 40. She described the pressure women face regarding fertility timelines.

“Biology is incredibly cruel on women in that decade,” Miller told the magazine. She said the procedure helped alleviate a significant personal anxiety. This candidness has made her a relatable figure for many women.

Her relationship with Oli Green has also drawn public attention. The couple has a 15-year age difference. Miller has spoken about the double standards applied to older women in relationships.

A Timeline of Family Growth

Miller’s family is expanding quickly. She welcomed her first child with Green, a daughter, in late 2023. Her eldest daughter, Marlowe, is from her previous relationship with actor Tom Sturridge.

The family appeared united and happy on the recent red carpet. Photographs show Green offering supportive touches. Marlowe stood proudly beside her mother, mirroring her confident pose.

Sienna Miller’s third pregnancy announcement merges high fashion with personal narrative, challenging stereotypes about age and motherhood while celebrating a new chapter for her growing family.

Info at your fingertips

How many children does Sienna Miller have now?

With this new pregnancy, Sienna Miller will soon have three children. She has a 13-year-old daughter, Marlowe, with ex-partner Tom Sturridge, and a young daughter with Oli Green, born in 2023.

Who is the father of Sienna Miller’s new baby?

The father is actor Oli Green. Miller and Green have been in a relationship since 2022. This will be their second child together.

Where did Sienna Miller announce her pregnancy?

She announced it on the red carpet at the 2025 Fashion Awards. The event was held at the Royal Albert Hall in London. Her sheer Givenchy gown clearly revealed her baby bump.

Has Sienna Miller spoken about fertility before?

Yes, she has been very open. Miller discussed freezing her eggs in her forties in interviews with Elle UK and Vogue. She highlighted the societal pressures women face regarding age and motherhood.

What has the public reaction been to her announcement?

The reaction has been overwhelmingly positive. Fans and fashion commentators have celebrated both the news and her bold style choice. The moment is seen as empowering for many women.

How old is Sienna Miller?

Sienna Miller is 43 years old. Her pregnancy highlights a broader conversation about women having children later in life. She has addressed this topic with honesty in past media appearances.