<Li> Razor & Tie </Li> <Tr> <Th> Associated acts </Th> <Td> The Pretty Reckless </Td> </Tr> <P> Taylor Michel Momsen (born July 26, 1993) is an American musician, singer, model, and former actress . She is known for portraying the character of Jenny Humphrey on the CW teen drama series Gossip Girl (2007--2012) and Cindy Lou Who in the film How the Grinch Stole Christmas! (2000). She is also known for being the lead singer and frontwoman of the American rock band The Pretty Reckless . </P> <P> Momsen was born in St. Louis, Missouri . Her parents are Michael and Collette Momsen and she has a younger sister, Sloane Momsen, who is also an actress . She has Russian ancestry . She was raised Roman Catholic and attended Our Lady of Lourdes Catholic School for elementary school and later Herbert Hoover Middle School in Potomac, Maryland . She studied dance at the Center of Creative Arts in St. Louis . </P>

Who plays cindy lou who in the grinch