Millie Bobby Brown turning 20 last year was already mind-blowing and a dose of reality that every child actor has to grow up ...

Millie Bobby Brown doubled down on her recent Y2K aesthetic with an epic bleach-blonde look for her 21st birthday ...

The "Stranger Things" actress went totally under the sea, with a themed look and cake for the milestone event.

Millie Bobby Brown marks her 21st birthday with a bold transformation, showcasing fishtail braids and a new style.

Millie Bobby Brown celebrated her 21st birthday on Wednesday, Feb. 19, and shared a glimpse into how she spent the day, ...