Millie Bobby Brown and husband adopt a baby girl

Millie Bobby Brown has announced she and husband Jake Bongiovi have adopted a baby daughter.

The 21-year-old star of Stranger Things and Enola Holmes posted a message on Instagram saying: "This summer, we welcomed our sweet baby girl through adoption.

"We are beyond excited to embark on this beautiful next chapter of parenthood in both peace and privacy."

It ended: "And then there were 3. Love, Millie and Jake Bongiovi." The couple didn't reveal the name of their new addition but included an image of a willow tree in the post.

The news comes 15 months after the actress married Bongiovi, the 23-year-old son of rock singer Jon Bon Jovi. Brown herself was 20 at the time.

This was not out of step with either of the couple's parents, who wed "really young", Brown told Call Her Daddy podcast host Alex Cooper.

"We had really great role models. We didn't see any different," she added.

The pair met through a mutual friend and connected after the actress cold-called her now-husband. They now live on a farm with a string of animals.

Brown herself is affiliated with a dog rescue centre named Joey's Friends and told Vogue she has rescued more than 230 dogs.

At one point, she was personally fostering 23 dogs, per an interview she gave on The Drew Barrymore Show.

At the end of last year, she finished filming the final season of Stranger Things, one of the most popular shows in Netflix's history.

The supernatural drama gave Brown her breakthrough at the age of 12, and will conclude when season five is released at the end of 2025.

She finished shooting a third Enola Holmes film at the end of June, and has also starred in Netflix's Damsel and The Electric State, as well as two Godzilla films.