The Stranger Things actor just turned 21, and celebrated her birthday during what looks to be a cute dinner with her close circle—where she wore a green bustier and sunglasses.

To celebrate her 21st birthday, Millie Bobby Brown transformed into a mermaid, rocking long blond fishtail braids and an ocean-green sequined dress. Millie Bobby Brown/Instagram ...

Gia Giudice celebrated her 22nd birthday in Tulum, Mexico, in two stunning green looks. See the photos! ... giving the most beautiful beachside vibes.