Sienna Miller's Daughter Marlowe Is Growing Up Fast & Could Be Her Twin

Sienna Miller's daughter Marlowe is growing up to be gorgeous just like her mom. Ever since her breakthrough in the early aughts, Miller has stunned in the spotlight, and apart from her talent, the "Factory Girl" star has also been known for her style and beauty. Whether Sienna Miller is giving us stunning Wimbledon outfits or rocking the effortlessly tousled "London hair" updo, the actor has always been on top of trends. And now it seems as if her daughter Marlowe is set to steal some of the spotlight, as she is easily among the celebrity kids who have the potential to be fashion icons.

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Marlowe, who turned 14 in July 2026, accompanied her mother to the premiere of her film "War" in September 2026 in London, England. For the occasion, Miller wore a delicate strapless black gown by Dilara Fındıkoğlu, a design entirely covered in feathers. Marlowe's look wasn't as dramatic, as the teen opted for a more casual approach. Dressed in a yellow graphic tee and black silk midi skirt, she was a great example of the popularity of Y2K fashion in the mid 2020s. Paired with a large handbag, the look was effortless yet on-trend, proving that the apple doesn't fall far from the tree — Marlowe is clearly among the celebrity kids who inherited their parents' famous style.

Apart from the fact that Marlowe is a fashionable teen, many instantly noticed how much she looks like her mother the older she gets. "Gorgeous like her mom," a user wrote on X, with another one adding, "Like mother like daughter."

Marlowe is Sienna Miller's eldest daughter, whom she shares with her ex, Tom Sturridge. The Hollywood star has two more children with her current fiancé, Oli Green. When Marlowe was 10, Miller spoke to Vogue about her, revealing, "She's got her own sense of self and style. Mine was much more eclectic. Hers is cool and really chic and quite '90s." The "American Sniper" star added that Marlowe was all about the clean girl aesthetic that became viral on TikTok.

Miller revealed that her daughter loves fashion and enjoys watching her dress up. "She loves me for being the ratty mum that I am but she is much more put together than I am, so sometimes she appreciates it if I wear a bit of makeup and a heel," Miller explained, adding, "She loves the sound of a heel. I think she associates the sound of heels with a 'together mother.'" 

Even back then, Miller shared that she was no stranger to swapping clothes with her daughter. "I've lost a lot of hoodies, but I steal her clothes, too. Her little T-shirts are quite sweet over a vest and her jumpers are really nice and cropped," the actor admitted. Considering that they like to raid each other's closets, we have no doubt that it's only a matter of time before Marlowe joins the list of celebrity kids who borrowed iconic vintage outfits from their famous parents.