The CW; Kevin Mazur/Getty Images for The Chris Cornell Estate
Little J has come a long way since her days trying to snag a place in Blair's crew. Momsen was just 14 when she starred as Jenny Humphrey on Gossip Girl, though she left the show in 2010 as music was her ultimate passion from an early age. She went on to form and front her band The Pretty Reckless when she was 17. They have released four studio albums.
"The thing that made me the happiest is when I finally quit," the now-27-year-old explained of her decision to exit the hit series in a recent interview with Metro.co.uk. "And I could focus on my true passion, and the thing I really always wanted to do with my life."