- Her brother, Michael Cavallari, was found dead on December 10, 2015, having died of hypothermia following a car crash.
- (June 7, 2013) Married her boyfriend of 2 years Jay Cutler in Nashville, Tennessee, following a 19-month-long engagement. They have 10-month-old son Camden together.
- (April 27, 2020) Has filed for divorce from her husband of 6 years Jay Cutler.
- Gave birth to her 2nd child at age 27, a son named Jaxon Wyatt Cutler on May 7, 2014. Child's father is her now ex-husband, Jay Cutler.
- Moved to Laguna Beach the summer after junior high to live with her dad and brother. Before that, she lived in Colorado and then moved to Chicago and lived with her mom, step-father, and step-brother. One of the very few characters not originally from the area.
- Aspires to be either a talk show hostess or a news anchorwoman.
- (June 7, 2013) Married her boyfriend of 2 years and father of her 9-month-old son named Camden, Jay Cutler, following a 19-month-long engagement.
- Auditioned for the role of Alison Scott in En cloque, mode d'emploi (2007) that later went to Katherine Heigl.
- Gave birth to her 3rd child at age 28, a daughter named Saylor James Cutler on November 23, 2015. Child's father is her now ex-husband, Jay Cutler.
- Was going to appear in a 2007 remake of Les Tronches (1984) starring Adam Brody but after three weeks of filming the project was canceled.
- Her father, Dennis Cavallari. is of Italian descent. Her mother, Nicole Cavallari, is of German ancestry. One of her maternal great-grandfathers, The Rev. Charles William Gustave Eifrig, was a Lutheran minister.
- Gave birth to her 1st child at age 25, a son named Camden Jack Cutler on August 8, 2012. Child's father is her fiancé (now ex-husband), Jay Cutler.
- She attended Loyola Marymount University in Los Angeles, California.
- Recently had Lasik eye surgery and documented it for realitylasik.com.
- Attended her high school freshman year at a Catholic school before switching to a public school.
- Ranked #8 on Reality TV Magazine's List of The Greatest Female Reality Stars of 2005.
- She was on the cover of Seventeen, had sexy photos in Rolling Stone and has appeared on numerous television talk shows.
- She attended VH1's "Big in '05 Awards", as a nominee for the "it girl" of 2005, which eventually went to Lindsay Lohan.
- Has a shih tzu named Bru.
- Was slated to be co-hosting a TV show on UPN called Get This Party Started (2006), but the show was canceled after only two episodes.
- Created a shoe line with Chinese Laundry, a women's footwear company.
- Finishing her Senior year in high school. (November 2004)
- Has an older brother, Mike.
- Authored the book "Balancing In Heels".
- Created a jewelry line with Emerald Duv.
- Has two siblings, one a biological brother and one a step-brother.
- Expanding her acting career by filming Green Flash (2008). (October 2007)
- Friends with Orly Shani.
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