“Stranger Things” star Millie Bobby Brown turned up the heat while enjoying a day at the beach.

On Friday, the 21-year-old actress took to Instagram to post a trio of photos showing off her toned physique in a skimpy string bikini.

Brown’s paisley blue and green two-piece featured an embroidered triangle top with white lace ruffled trim and a gold pendant that hung from the beaded center string.

Brown accessorized with a pair of designer sunglasses by the Mondottica Group along with a light purple beaded necklace and gold hoop earrings.

The “Enola Holmes” star captioned her post with an emoji of a sun, an ocean wave and a seashell.

Brown’s slideshow was met with praise in the comments section from fans and celebrity friends, including Paris Hilton, who left a smiley face with heart eyes emoji.

In May, Brown paid tribute to husband Jake Bongiovi on his 23rd birthday with a post on social media.

Brown shared a carousel of photos, including a never-before-seen snap from the couple’s honeymoon in Croatia in October 2024.