Actress Sienna Miller has officially welcomed her second child with partner Oli Green, sharing the emotional news during a promotional interview for her latest film, Jack Ryan: Ghost War.
The 44-year-old star revealed she is now adjusting to life with a newborn and admitted the exhaustion has already kicked in. Speaking to E! News, Sienna sweetly confessed: “It’s happened. I have a tiny baby next door. 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.”
The actress already shares a two-year-old daughter with Oli, 29, while also co-parenting her eldest daughter Marlowe, 13, with former fiancé Tom Sturridge.
Sienna first revealed her pregnancy in dramatic fashion back in December at the glamorous Fashion Awards in London, proudly showing off her growing baby bump on the blue carpet outside the Royal Albert Hall. It marked yet another iconic red carpet pregnancy reveal for the actress, who previously debuted her second pregnancy during the Vogue World Show in 2023.
While promoting her new movie, Sienna also reflected on her relationship with Oli — a romance that initially surprised her because of their 15-year age gap. She admitted: “I didn’t expect to take it seriously and then quite quickly, I fell in love.”
The actress previously joked about dating a younger man, saying: “I wasn’t like, ‘I’m gonna get a younger boyfriend.’ It was more, ‘F***! Why are you young? That’s so annoying.’”
Despite public fascination with their age difference, Sienna has repeatedly defended the relationship and praised Oli for his maturity and respect towards women. She said she believes younger generations of men have grown up with “a slightly more level playing field.”
The Hollywood star has also spoken candidly about the double standards older women still face when dating younger men. In an earlier interview, she said such relationships are “still fetishised rather than normalised” and admitted she would love to see that stigma disappear.
Now, after months of pregnancy speculation, glamorous red carpet appearances and honest confessions about cravings, postpartum fears and motherhood, Sienna is embracing life as a mum-of-three — even if she’s surviving on almost no sleep.
