11/07/2013 AT 1:30 PM ET
Today, Zooey Deschanel is best known as her lovably quirky character on Fox’s New Girl. But long before she was Jess Day, the actress played the love interest of Will Ferrell’s title character in the holiday classic Elf, which hit theaters 10 years ago, on Nov. 7, 2003. Hard to believe, right?
Check out Deschanel’s lighter locks below, and keep scrolling to watch some of her musical moments in the film.
Do you like her better as a blonde or a brunette? Tell us in the comments below.