The Hills Kristin Cavallari: Mischa Barton joining 'The Hills' revival is "interesting" 04/18/2019 Kristin Cavallari thinks Mischa Barton joining "The Hills" reboot is an "interesting" decision. Read More RELATED NEWS Kristin Cavallari debuts new 24-year-old boyfriend Mark EstesBrody Jenner and Tia Blanco welcome their first child'The Hills' alum Brody Jenner engaged to pregnant girlfriend Tiarah "Tia" Blanco TAGS: Kristin Cavallari Mischa Barton Whitney Port
