Kiernan Shipka is making waves in Hollywood. The actress, who is best known for her role as Sally Draper on Mad Men [1], recently nabbed the lead role of Sabrina Spellman [2] in the upcoming Netflix series The Chilling Adventures of Sabrina [3]. Given that Kiernan has been in the industry for quite a few years now and has two SAG Awards under her belt, it's easy to forget how old she is — or, in this case, how young she is. So, let's settle this once and for all: Kiernan was born on Nov. 10, 1999, making her 18. We can't wait to see what she has in store for us as Sabrina!