Millie Bobby Brown Rocks Briefs As She Wears Nothing Under Thin Tank Top

Millie Bobby Brown shakes up Instagram with her underwear photos!

The British actress took to the social media site and shared two snapshots via Stories that got her fans talking. Brown left little to the imagination as she stripped down to the basics to promote her fashion brand, Florence by Mills Fashion.

The 21-year-old showcased her enviable curves by wearing nothing but her underwear, which was in a newly released color now available on the brand's website.

Brown stunned in a light blue two-piece set, which included a tank top made of thin fabric that exposed the "Enola Holmes" star's lack of a bra. The garment's cropped design allowed the blonde beauty to flaunt her taut tummy.

Below, Brown sported briefs in a matching color featuring a high-rise fit with the waistband sitting just below her belly button.

Brown took the snaps in a luxurious bathroom complete with a bathtub, flat-screen TV, and an enclosed shower area. The actress stood near the sink and placed one of her hands on the flat surface as she took the selfies.

For the occasion, Brown left her hair down and wore several rings and makeup. She indicated that the underwear was a "new shade" in the first picture, along with a link to purchase the piece.

Brown's Florence by Mills expanded from beauty to fashion in 2024. During an interview with ELLE, the actress revealed what made her decide to delve into the fashion industry.

"I never thought I'd explore much with florence, but the more I moved, I thought, 'Oh my gosh, I can do anything I put my mind to,'" Brown said. "Anything that feels authentic to me, I can create for people that are like me. Whatever I want or whatever crosses my mind during the day, I think maybe somebody else is thinking too, and if I can create that and be that outlet, that's very rewarding."

Brown continued, "[When Stranger Things took off,] I was 10. I was going to these events and ceremonies, and all these big fashion brands wanted to style me.

I didn't know what my personal style was, and the only time I got dressed, other than for ceremonies, was to go to work," adding, "As I got older, I was like, 'What is my personal style?' A lot of my friends already knew [their styles,] but I didn't know mine. For me, fashion has always been ever-evolving.

It's fluid, and I wanted to create something that girls going through a similar experience have a resource to try innovative new outfits and styles, and phases. I wanted to be able to create something that was accessible to my generation, to my demographic so that when they go into a store, they feel like they have that one corner, even if it's a corner in the back, that they have what they're looking for, and they're able to afford it."