The 'Stranger Things' star just made a bold style move, swapping her signature look for something totally unexpected.

The 'Stranger Things' actress, 20, showed off her platinum blonde tresses in multiple snaps shared on Instagram ...

Millie Bobby Brown is ditching the dark side. The Stranger Things star has gone blonde and it’s very Britney Spears-coded.

In the show, Brown plays Eleven, a girl with supernatural powers, and, yes, brown hair. Could Brown's new blonde look be a sign that she's already working on a new Y2K-coded project? Time will tell.

Brown's hair is a platinum blonde, falling under her shoulders. While she's previously worn blonde hairstyles in the past, this appears to be her boldest look yet, with her hair dyed a brighter ...

Millie Bobby Brown ... Saturday. Brown, 20, appeared to get a money piece on her face-framing layers. The coloring technique involves lightening the front sections of hair. In the photos, the ...

Millie Bobby Brown has been a consummate brunette ... and bleached all the way to her roots. Millie Bobbie Brown debuts a blonde hair transformation on a date with her husband Jake Bongiovi ...

Kristina Bumphrey/Variety via Getty; Millie Bobby Brown/Instagram Millie ... pushing her hands through her hair as she gazed toward the floor. Brown completed her glam get-up with a brown lip ...

Instagram/Millie Bobby Brown The fifth and final season of Netflix's Stranger Things wrapped last month. In the show, Brown plays Eleven, a girl with supernatural powers, and, yes, brown hair. Could ...

pushing her hands through her hair as she gazed toward the floor. Brown completed her glam get-up with a brown lip and some smoky eye makeup. Related: Millie Bobby Brown Reads Emotional Note as ...