Taylor Michel Momsen (born July 26, 1993) is an American actress, singer and model. She portrays the character Jenny Humphrey on The CW television series Gossip Girl.
She began acting professionally at age three, with a national commercial for Shake 'N' Bake. Then she got a role in The Prophet's Game. In 2000 Momsen got the role of Cindy Lou Who in How the Grinch Stole Christmas. Two years later she got parts in two more motion pictures: Hansel & Gretel, in which she played Gretel, and Spy Kids 2: Island of Lost Dreams, in which she played Alexandra, the President's daughter.