Hailing from Santa Barbara, California, Lacie Heart rapidly became one of the most popular porn stars of 2005-2006 due to her pretty girl-next-door looks and her giggly yet softly-spoken personality. Lacie appeared in several dozen gonzo films and websites and gained further fame and popularity appearing in Jenna Jameson's American Sex Star contest, which she controversially lost. Subsequently she was signed up as a contract performer for Vivid Entertainment in early 2006.

As of August 2006, Lacie Heart is still in the industry though there were many rumors of her retirement to settle down with boyfriend and fellow performer Scott Nails. Lacie made her anal sex debut in 2006, performing in "Roughed Up" with bisexual boyfriend Scott Nails. She has been called "the prettiest girl in porn" (back cover of Hellcats 12).

In December of 2006, Lacie signed with Digital Playground.