“Stranger Things” actress Millie Bobby Brown, 21, made a dramatic hair change, swapping her platinum locks for her original deep brunette shade. Quite the beauty risk-taker, the starlet debuted her fresh new tresses on Thursday at the semi-final of the Miami Open, which was held at Hard Rock Stadium.

I can no longer keep up with Millie Bobby Brown’s hair transformations. One day she’s rocking a full Pamela Anderson–inspired, messy blonde updo, and the next she’s promoting her line of hair and body mists with sleek,

Amid all the chatter around her appearance, Millie Bobby Brown has shared a rare glimpse at her natural hair. For context, Millie, 21, has sadly found herself at the center of ongoing discourse around her looks for years,