More 30++ Millie Bobby Brown Eleven Stranger Things 3. At the age of twelve, she gained notability for her role as eleven in the first season of netflix science fiction series. Millie bobby brown's eleven probably had the biggest season to date on stranger things 3. Millie bobby brown (born 19 february 2004) is an english actress and producer. Edit of millie bobby brown as eleven with the neverending story song and scenes from stranger things season 3.