Millie Bobby Brown is becoming an all-American girl.

In fact, fans of the Stranger Things star have noticed that her once very strong English accent has started to change. While recently recounting the story of how fiancé Jake Bongiovi proposed to her, Millie seemed to be halfway to an American accent. 

"We were on vacation and he was like, ‘Mil, you got to be up at 8 a.m. we're going on a dive,'" Millie said on The Tonight Show Starring Jimmy Fallon Feb. 29. "I was like, ‘8 a.m.? Dive?' and he's telling me, like, ‘We're going to the same spot we usually go to,' and I'm like ‘It's boring, let's go somewhere new,' and he's like ‘No, we have to go to this spot.'"

Fans pointed out on social media that she pronounced "vacation," "together" and "eight" in the American style, while "bonded" and "going" sounded more British with the pronunciation of the letter "O." 

"Her british accent is barely there anymore," one user noted in the comments. "i know shes been in America for a long time now but omg it used to be SO strong!"

Another also noticed her "strong" American way of speaking, adding, "she pronounces certain words like a brit but the cadence she's using is so american."

While Millie may be sounding more American these days, it's likely her accent is a mixture of many different places she's lived. The 20-year-old was born in Spain before her British parents moved back to England when she was 4. And a few years later, the Browns moved to Florida when the Enola Homes star wanted to pursue acting. Since then, Millie has continued to split her time between England and the United States.

So, why is she leaning more American now? Some fans speculated that her accent is stronger right now since Stranger Things is currently filming season five.

As one fan explained, "She's filming stranger things where her accent is American so she's probably in that mode."

But other social media users also pointed out that spending time with Jake—who was born in New Jersey—is likely a major factor, with one person noting, "I think she's just losing her accent because she's spending so much time in the US with her fiancé."

After all, the two have been inseparable since they first began dating in 2021.

"As soon as we spoke I knew he was going to be a huge part of my life," she told The Times in August. "I ran to my mum and said, 'I really, really like him!' After we met we knew we never wanted to leave each other's side."

Can't get enough of their young love? Keep reading to see more of Millie and Jake's cutest moments.

Jake shared a tribute to his partner for her 20th birthday, writing, "Happy birthday my beautiful fiancéI love you so much. Big year ahead."

The two appear at the event, where Millie was honored as one of two Global Women of the Year.

Jake shared this pic in the final days of summer 2023.

Millie and Jake enjoyed a day out with her sister Ava Brown, 11, and friends at the Six Flags Over Georgia theme park.

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.

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."

The sweet post included photos of the couple.

The pair's silly side is depicted in one image of Jake and Millie clowning around in the pool

Jake and Millie snuggle up in a romantic selfie.

Millie shared photos of the couple in celebration of the New Year, writing, "endlessly in love with the year I've had."

One snapshot showed a photo booth strip of the loved-up couple.

As Millie put it, "grateful for my friends, family, donkey (bernard), my doggies, my puppies teeth, and my partner for life."

Millie and Jake were twinning at the premiere of Stranger Things season four in New York City.

Millie and Jake make their first joint appearance at a celebrity event—the 2022 BAFTA Film Awards in London.

"We're starting a band," Jake wrote on Instagram, "send name ideas."

Jake posted this photo, with the caption, "bff <3"

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