How old is Millie Bobby Brown?
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Millie Bobby Brown: 42 facts you need to know about the Stranger Things star
2. How old is Millie Bobby Brown?
Millie Bobby Brown is 19 years old. Her birthday is February 19th 2004. She has one older brother (Charlie), one older sister (Paige) and one younger sister (Ava). She's also the second youngest original main cast member on 'Stranger Things' and she's only six months older than Noah Schnapp who plays Will Byers. [@milliebobbybrown via Instagram]