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Sienna Miller's 2 Kids: Everything You Need to Know About Her Daughters

by Tasha Mayberry

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Miller became a mom for the first time when she welcomed her daughter Marlowe with ex Tom Sturridge in July 2012. She later welcomed her second child, a baby girl, with her boyfriend Oli Green. The news broke in early January 2024, after photos surfaced of Miller on a stroll with her infant and Green. In a 2019 interview with PEOPLE, Miller discussed her life as a mother: “When you are raising a child you see aspects of your character in that person, reflected back, and it’s the most loving, intense relationship that I have,” she said. “There’s nowhere to hide. She knows me, I know her. She’s really stubborn, which is very like me. I see her as her own person but I also see genetic things. She’s heaven, my kid.

Marlowe Sturridge

In January 2012, reports first surfaced that Miller and Sturridge were expecting. Though the actress stayed coy about pregnancy rumors at the time, she later showed off her baby bump at a New York event in March 2012. Miller and Sturridge welcomed their daughter Marlowe in July 2012. The actress’ sister Savannah confirmed the baby’s name on Twitter, writing, “Marlowe I love you.” Though Miller has kept Marlowe out of the spotlight, she occasionally shares glimpses of their relationship. In December 2014, Miller opened up about motherhood to Vogue, saying, “I was overwhelmed by how normal it felt. It was like, ‘There you are — that’s what I’ve been missing.’ Like we’re both in on something only we know. An amazing sense of being complicit with a little being.”

In July 2015, PEOPLE confirmed that Miller and Sturridge had broken up after four years of dating. A few months later, Miller discussed being a single mom in an interview with Vogue UK for the publication’s October issue. “It’s been really quite overwhelming recently, just with the volume of everything going on,” she said at the time. “Everything is shifting. It’s actually been the shittiest year, and amazing. It’s always yin and yang. I feel like if you’re excelling in one area, it’s hard to manage both, and I do feel like the work is going really well.

Sienna Miller’s Daughter with Oli Green

In August 2023, photos of Miller on a beach in Ibiza confirmed that she was pregnant and expecting her second child with boyfriend Oli Green. Miller previously opened up about the “pressure” to grow her family after turning 40 during a 2022 interview with Elle UK. “[The] pressure… [about] kids, and should I have more, and why haven’t I, and all of that, which is a really loud noise. Biology is incredibly cruel on women in that decade – that’s the headline, or it certainly was for me,” she said. “Then I got to 40 and I froze some eggs. Having been really focused on the need to have another baby, I’m just like, if it happens, it happens. That kind of existential threat has dissipated.”

In September 2023, the American Woman actress was photographed walking the red carpet at the Vogue World Show, kicking off London Fashion Week. The star wore an epic cropped white, long-sleeve top that stopped just before her bump, baring her belly.

Who Is Sienna Miller's Boyfriend? All About Oli Green

The couple, who have been linked since February 2022, recently welcomed their first child together, according to photos obtained by The Daily Mail, which featured Miller and Green on a stroll with their newborn. Miller and Green confirmed their romance when they were seen leaving the 2022 BAFTA Film Awards together. However, they didn’t make their red carpet debut until March 2022 at the Vanity Fair Oscar Party. Before dating Green, Miller was in a relationship with actor Tom Sturridge from 2011 to 2015. Together, they welcomed one child, daughter Marlowe Sturridge, in July 2012.