Millie Bobby Brown may have just shared more about her new baby girl.
After the Stranger Things actress and her husband Jake Bongiovi announced that they had recently adopted a daughter, she may have also inadvertently revealed their baby girl's initials.
Millie and Jake were spotted out and about in the Hamptons, where Millie was seen holding a phone case with the initials RWB on it in big block letters, photos published by The Daily Mail show.
The update comes as the couple shared their exciting news with the world while also signaling their wish to embark on their newfound parenthood journey away from the public eye.
"This summer, we welcomed our sweet baby girl through adoption," they announced in an Aug. 21 Instagram post. "We are beyond excited to embark on this beautiful next chapter of parenthood in both peace and privacy."
Millie and Jake added, "And then there were 3."
The couple's new addition to their family comes one year after they tied the knot and reflects the comments that Millie, 21, had recently made about her desire to start a family.
"My mom actually had her first child at 21 and my dad was 19," she explained on the SmartLess podcast in March. "This has been my thing since before I met Jake. I wanted to be a mom just like the way my mom was to me."
"Jake knows how important it is to me," the Enola Holmes actress continued. "Of course, I want to focus on really establishing myself as an actor and as a producer, but I also find it's so important to start a family for me personally."
Millie added that Jake's wish was for them to get married before welcome a child into their life.
"That was his thing," she explained. "And my thing was, I really want a family. I really want a big family. I'm one of four. He's one of four. So, it is definitely in our future."
The Damsel star expressed her openness to adoption at the time, too.
"For me, I don't see having your own child as really any different as adopting," she explained. "I feel like anything's out because my home is full of love for anyone and anything. And so that is kind of what we stand by. Jake and I, the energy in our house is the door is always open."
Keep reading for more about Millie and Jake's relationship...
June 2021: First Instagram Pic
The pair sparked romance rumors around the time that Jake posted this photo, with the caption, "bff <3"
November 2021: Never Say Goodbye
The couple officially confirmed their romance with this PDA pic.
November 2021: Bon Jovi 2.0
"We're starting a band," Jake wrote on Instagram, "send name ideas."
December 2021: Merry Christmas
The Stranger Things star and the actor celebrated their first Chirstmas together in 2021.
December 2021: Happy Holidays
Sweet selfie.
February 2022: Celebrating Millie's 18th Birthday
Twinning.
March 2022: Red Carpet Official
Millie and Jake make their first joint appearance at a celebrity event—the 2022 BAFTA Film Awards in London.
May 2022: Stranger Things Premiere
Millie and Jake were twinning at the premiere of Stranger Things season four in New York City.
January 2023: New Year's
Millie shared photos of the couple in celebration of the New Year, writing, "endlessly in love with the year I've had."
January 2023: New Year's
One snapshot showed a photo booth strip of the loved-up couple.
January 2023: New Year's
As Millie put it, "grateful for my friends, family, donkey (bernard), my doggies, my puppies teeth, and my partner for life."
February 2023: Golden Birthday
Jake marked Millie's 19th birthday on Feb. 19, 2023 with a sweet tribute, writing, "Another year around the sun together happy 19th to the girl of my dreams."
February 2023: Golden Birthday
The sweet post included photos of the couple.
February 2023: Golden Birthday
The pair's silly side is depicted in one image of Jake and Millie clowning around in the pool
February 2023: Golden Birthday
Jake and Millie snuggle up in a romantic selfie.
April 2023: Engaged
Millie announced the couple's engagement on Instagram, quoting Taylor Swift's song "Lover." The two would go on to celebrate with family and friends at an engagement party weeks later.
July 2023: Six Flags Visit
Millie and Jake enjoyed a day out with her sister Ava Brown, 11, and friends at the Six Flags Over Georgia theme park.
September 2023: Summer Nights
Jake shared this pic in the final days of summer 2023.
November 2023: Glamour Women of the Year
The two appear at the event, where Millie was honored as one of two Global Women of the Year.
February 2024: Happy Birthday Millie
Jake shared a tribute to his partner for her 20th birthday, writing, "Happy birthday my beautiful fiancéI love you so much. Big year ahead."
March 2024: Anniversary
Millie shared this tribute to Jake on their third dating anniversary.
May 2024: Married
After three years of dating, the duo tied the knot in a private ceremony, multiple outlets reported.
August 2025: Expanding Their Family
Over a year after their nuptials, Millie and Jake shared they had a new arrival.
"This summer, we welcomed our sweet baby girl through adoption," the couple announced in an Aug. 21 Instagram post. "We are beyond excited to embark on this beautiful next chapter of parenthood in both peace and privacy."
They concluded, "And then there were 3."