Millie Bobby Brown was only 11 years old when most of her fans met her in the first season of Stranger Things –– but the actress is not so little anymore as she just celebrated her 21st birthday.

The couple spend their time on the remote farm in Georgia they share and when she’s not on set, Millie spends her time tending to her horses, sheep, donkeys and cows. However, Millie’s unique childhood has meant that she struggles making friends. The 21-year-old told Vanity Fair: “I don’t have many friends because of who I am.