While the cast members have pretty good relationships off-camera, Brown and Noah Schnapp, 17, (who plays Will Byers on the show) share a particularly strong bond and are more than just co-stars – they are BFFs too!

Here we take a look into their adorable bond and the #BFFGoals they have built over the course of a seven-year-and-counting friendship.

The richest Bling Empire season 2 cast members, net worths ranked

They got close in 2015

While their Stranger Things characters Eleven and Will don’t interact much until the show’s third season, the duo instantly hit it off as friends from the beginning when they first started shooting back in 2015.

Brown was around 11 years old at the time, while Schnapp was only nine years old.

They even have cute nicknames for each other

Are you even best friends if you don’t have cute nicknames for each other? Schnapp occasionally refers to Millie as either “Mills” or “Millster” on Instagram, while Brown calls him “Schnipper” from time to time.

Where is Dr Donald Cline from Netflix’s Our Father now?

They also frequently – and proudly – share their love for each other on social media. In fact, in one Instagram, post Brown called Schnapp “the greatest friend a girl could ask for!”

They’ve ridden roller coasters and met famous people together

Over the years, the dynamic duo have even graced the red carpet together, posing together quirkily at the 2017 Netflix Golden Globes after-party.

They have fun together outside of Hollywood’s glitz and glamour too. Some of their activities have included riding roller coasters together, clips on YouTube reveal.

They did a BFF test and made a TikTok dance video

Remember when they took this the “best friend challenge” together in 2019? Schnapp posted it on his official YouTube page and the video has been watched over 42 million times at the time of writing.

Michelle Dockery on Downton Abbey’s film sequel and playing strong women

Throughout the playful seven-minute video, we learned that Brown has multiple birthmarks and she is not actually into perfume. Meanwhile, Schnapp revealed that his grandparents are all alive and he once got stuck in a chair.

Besides the BFF video, the two also did a TikTok dance last year which saw them grooving to Polo Frost's Best Ever. The post currently has 16.5 million likes and counting.

They also love to prank each other

On a recent episode of The Tonight Show Starring Jimmy Fallon in March, Brown revealed her latest prank on Schnapp, which took place on the set of Stranger Things.

The prank involved a fake crying call that Brown made to Schnapp. After he rushed over to the set, she and the rest of the crew pelted him with water balloons. “I get him in the middle of the car park, and all of us, about 20 people, raid him,” she revealed.

The duo also recently talked about the beloved series coming to an end. Schnapp told Fallon that, after reading the director’s letter saying that it was “the beginning of the end” for the show, “I texted Millie who was like, ‘You're crying too? So am I!’”

Meet Dorothy Wang, new cast member of Bling Empire’s Season 2

Schnapp also praised Brown’s acting prowess recently. He told Extra that it’s been “a blast” to work with her and added, “She's so talented and just working off of her is amazing and I just learn so much with her, so great ride.”

Volume II of the fourth season will be released in July. Stranger Things has also been renewed for its fifth and final season.