Savannah Miller has shared the joyful news that she is expecting her first child with her new husband James Whewell — but what makes the moment even more extraordinary is that she is going through pregnancy at the same time as her famous sister, Sienna Miller.
The 47-year-old fashion designer, who married James in 2024 following her split from ex-husband Nick Skinner, took to Instagram to reveal the exciting update. Savannah, already a mum of three from her previous marriage, described the baby as a long-awaited blessing.
She wrote that their “longed for miracle baby is joining the gang in August,” expressing deep gratitude for the journey she is experiencing again. Savannah added that being able to relive pregnancy with James, whom she described as already “the most deserving and dedicated dad” to her children, felt like “a profound and phenomenal gift.”
But it wasn’t just the pregnancy itself that made the moment emotional — it’s the rare coincidence of sharing it with her sister.
Savannah admitted that going through the experience alongside Sienna is something truly special, calling it “the most delicious cherry on the icing on the cake.” Reflecting on time and motherhood, she shared that as she stands “on the cusp of my firstborn’s 21st birthday,” she now understands how fleeting those early years are and hopes to savour every moment again.
Meanwhile, Sienna Miller, 44, is also preparing to welcome her second child with partner Oli Green, 29. The actress recently returned to Instagram after an eight-year absence, posting a playful snap showing off her growing bump.
In the light-hearted post, Sienna lifted her knitted jumper to reveal her pregnancy, pairing it with humorous memes referencing her long break from social media. Friends quickly flooded the comments, with Justin Theroux joking about her “non-stop posting,” while Poppy Delevingne and Laura Whitmore also shared their excitement.
Sienna already shares a young daughter with Oli, born in January 2024, as well as her 13-year-old daughter Marlowe with ex-partner Tom Sturridge.
The actress has also recently spoken about her relationship with a younger partner, noting that society still tends to “fetishise” older women dating younger men rather than fully accepting it as normal.
Now, as both sisters prepare to welcome new additions to their family within months of each other, the Miller household is set for an unforgettable summer — one filled with new beginnings, shared milestones, and a rare sisterly bond strengthened in the most personal way.
