- Started acting professionally at age 3 in a Shake-N-Bake commercial.
- At age 6, made film debut as Cindy Lou Who with Jim Carrey in 2000's How The Grinch Stole Christmas.
- Starred with younger sister Sloane Momsen in We Were Soldiers (2002), in which they played Mel Gibson's daughters.
- Auditioned for the lead role in the Disney Channel series Hannah Montana and was in the Top 3 contenders, but ultimately lost the role to Miley Cyrus.
- Best known for her role as Jenny Humphrey in the CW teen drama Gossip Girl.
- Her alt-rock band the Pretty Reckless released debut album Light Me Up in 2010. A follow-up album, Hit Me Like a Man, was released in 2012.
- Collette Momsen — Mother
- Sloane Momsen — Sister
- Michael Momsen — Father
- Birth Name: Taylor Michel Momsen
- Birth Place: St. Louis, MO
- Birthday: July 26, 1993, Leo
- Profession: Actor, Singer
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Grey's Anatomy is obviously a big influence on Tay Tay