She spent her middle school years in Illinois, before calling California home for high school.
She first gained popularity after appearing in the MTV reality series, Laguna Beach: The Real Orange County, from 2004-2005.
When Kristin auditioned for the show, she was only a sophomore in high school.
The show followed her, along with fellow Hills alum Lauren Conrad, and friends as they navigated their way through their junior and senior years of high school.
Kristin and Lauren didn’t like each other in high school. This was because Lauren’s best friend at the time – Stephen Colletti (who you may also know from One Tree Hill!) – was also Kristin’s boyfriend.
Despite being portrayed as the “wild child” on Laguna Beach, Kristin was originally hurt by how the show portrayed her. It also caused rifts in her relationship with Stephen.
Kristin then had some small acting roles between 2006-2009, before making her “reality TV comeback” to MTV’s The Hills. This time, she knew what she was signing up for: to play “the mean girl” of the group.