Taylor Momsen is an American child actress and model. She was born in St. Louis, Missouri to Collette and Michael Momsen and lives in Potomac, Maryland. Her younger sister, Sloane Momsen, is also an actress.

She began acting professionally at age 3, with a national commercial for Shake 'N' Bake. Then she got a role in The Prophet's Game. In 2000 Taylor 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.

Taylor's career came to a halt for over three years until she got the lead role in the never-aired The WB series Misconceptions. In 2002, Momsen recorded "Rudolph the Red-Nosed Reindeer" & "One Small Voice" featuring Myra & Camille Winbush for School's Out! Christmas.

Momsen appeared in the 2006 film Saving Shiloh and as Molly in the 2007 Walt Disney Pictures film Underdog.

She currently plays the character of Jenny Humphrey in the CW television series Gossip Girl, which is based on the book series by Cecily von Ziegesar.

In June 2008, at the age of 14, Momsen signed to IMG Models.