Sarah Hindsgual, a hairstylist on the Netflix series ?Stranger Things,? revealed that over 150 wigs were used during the film of the second season. Actress Linnea Berthelsen, who played Eleven?s long-lost ?sister? Kali, posted a video of her getting buzz-side cut, which only reiterates how many hair transformations the show required. The video is actually quite cute, because the actress who plays Eleven, Milly Bobby Brown, narrates.