Kristen Carroll Wiig (; born August 22, 1973) is an American actress, comedienne, writer and producer. She is known for her work on the NBC sketch comedy series Saturday Night Live (2005–12), and such films as Knocked Up (2007), Walk Hard: The Dewey Cox Story (2007), Paul and Bridesmaids (both 2011), Girl Most Likely (2013), The Secret Life of Walter Mitty (2013), the animated Despicable Me film series, The Skeleton Twins (2014) and The Martian (2015).