The film was released July 14, 2009, to mixed to negative reviews.
In March 2014, Cavallari drew national criticism for refusing to vaccinate her children, a decision her husband, Jay Cutler, and she based on fears of a false connection between childhood vaccination and autism.
The series, by Allie Jones, was called "500 Days of Kristin", although it ended after just 415 days, with the publication of Cavallari's book Balancing in Heels.
In 2006, she signed on as Crystal in the horror film Fingerprints.
In 2008, she had a supporting role as Summer in Spring Breakdown alongside Amy Poehler.
In 2004, Cavallari came to prominence after being cast in the reality television series Laguna Beach: The Real Orange County, which documented the lives of her and her friends.
After moving to Los Angeles to pursue an acting career in 2005, Cavallari appeared in several television series as minor characters.She continued with the Laguna Beach series for two seasons before she moved to Los Angeles to aspire her dreams of acting.She was successful in badging numerous acting roles.The love triangle became one of the series' central plot lines.In May 2009, Cavallari confirmed she would be joining the cast of Laguna Beach's spin-off series, The Hills.By treating Cavallari's quotidian Instagram posts as newsworthy, the series appeared to gently mock the culture of celebrity women on social media.