Taylor Momsen was only 7 years old when she appeared in the 2000 Christmas fantasy comedy film, How the Grinch Stole Christmas. Momsen played the role of Cindy Lou Who, the daughter of Postmaster Lou Lou Who (Bill Irwin) and Betty Lou Who (Molly Shannon). Cindy played a critical role in the film as a little girl who wondered if the town of Whoville had forgotten the true meaning of Christmas.Momsen had always been a singer from a young age. She recorded two songs for How the Grinch Stole Christmas. These songs are Christmas, Why Can't I Find You? and Where Are You Christmas? She received three nominations for her role in the film, and it was the beginning of her fame.25 years later, Taylor is a full-fledged singer-songwriter. She has retired from acting and is now the frontwoman of the American rock band, The Pretty Restless. Getting into the Christmas mood early, Momsen's band released a five-track EP titled Taylor Momsen's Pretty Reckless Christmas on October 31. View this post on Instagram Instagram PostTaylor Momsen's complete filmographyTaylor Momsen was a successful actor before she began focusing on her music career. Have a look at her complete filmography below.FilmMomsen's acting career lasted for less than a decade. Here are all the films she appeared in.The Prophet's Game (1999) - Honey Bee SwanHow the Grinch Stole Christmas (2000) - Cindy Lou WhoSpy Kids 2: The Island of Lost Dreams (2002) - Alexandra AnamiHansel & Gretel (2002) - GretelWe Were Soldiers (2002) - Daughter Julie MooreSaving Shiloh (2006) - Samantha WallaceParanoid Park (2007) - JenniferUnderdog (2007) - MollySpy School (2008) - Madison KramerTelevisionOne of Momsen's most popular TV show roles is Jennifer "Jenny" Humphrey in Gossip Girl. She appeared in only three TV shows during her acting career. These include:Early Edition (1998) - Allie, Uncredited, Episode: "A Minor Miracle"Misconceptions (2006) - Hopper Watson, Unaired WB seriesGossip Girl (2007- 2010, 2012) - Jennifer "Jenny" Humphrey, Main cast, Seasons 1-4, Special guest star (season 6), 66 episodesMusic videosTaylor made two cameo appearances in two music videos. These were for Faith Hill's Where Are You Christmas? in 2000, and Fergie's L.A. Love (La La) in 2014.Taylor Momsen first won hearts as Cindy Lou Who, and her role in How the Grinch Stole Christmas marked the start of her journey in the spotlight. After a short but memorable acting career, she shifted her focus to music and became the lead singer of The Pretty Reckless. Now, 25 years later, Momsen continues to shine in the music world, celebrating the holidays with her new Christmas EP, Taylor Momsen's Pretty Reckless Christmas.