Kristin Cavallari arrives at the premiere Of DreamWorks "Transformers: Revenge Of The Fallen" at Mann Village Theatre on June 22, 2009 in Westwood, Los Angeles, California.Frazer Harrison/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari attends NYLON Magazine and MySpace Young Hollywood Issue Party at the Hollywood Roosevelt Hotel on May 4, 2009 in Hollywood, California.Jordan Strauss/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari arrives at the A Time for Heroes Celebrity Carnival Sponsored by Disney, benefiting the Elizabeth Glaser Pediatric AIDS Foundation, held at Wadsworth Theater on June 7, 2009 in Los Angeles, California.Mike Guastella/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari arrives at the Los Angeles premiere of "Marley & Me" on December 11, 2008 in Los Angeles, California.Gregg DeGuire/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari attends the "Cloak & Dagger Butterfly" By Amanda Eliasch Launch Party on February 17, 2009 in Beverly Hills, California.John Shearer/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari arrives at the Los Angeles premiere of "Star Trek" at the Grauman's Chinese Theater on April 30, 2009 in Hollywood, California.Alexandra Wyman/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari sighting in West Hollywood on April 29, 2009 in Los Angeles, California.Jean Baptiste Lacroix/Wireimage.com - Monday, August, 3, 2009, 9:3 PM

Kristin Cavallari arrives at "The Wizard of Oz" Exhibition's Opening Night Gala at the Fashion Institute of Design & Merchandising on June 9, 2009 in Los Angeles, California.Dr. Billy Ingram/Wireimage.com - Monday, August, 3, 2009, 9:3 PM