Born in Denver, Colo., the Laguna Beach reality star is a blonde bombshell, winning the hearts of male and female viewers alike. In addition to her on-air Laguna Beach courtship with cast member Stephen Colletti, Cavallari also dated Arizona Cardinals quarterback Matt Leinart. She broke up with Brody Jenner -- son of Olympic swimmer Bruce Jenner -- in early 2006.
Cavallari has tried to break into the acting scene by taking roles including that of a lesbian cheerleader on the television series Veronica Mars and a role in the thriller film Fingerprints.
Cavallari returned to reality TV for Season 6 of MTV's The Hills, replacing former narrator Lauren Conrad. Engaged to NFL player Jay Cutler in April 2011, the couple split three months later.