Kristin Cavallari's brother, Michael Cavallari, tragically passed away at the age of 30. His body was found nearly two weeks after he was reported missing on Dec. 10, 2015. Kristin has been open about her brother's struggles with substance abuse and mental health issues, particularly bipolar disorder.
Kristin and Michael were born to Judith Eifrig and Dennis Cavallari in the 1980s. They had a close relationship growing up, with Michael being described as having a sweet soul and a fun-loving personality. However, he faced challenges with drugs and alcohol, leading to a turbulent period in his life.
