Kristin Cavallari is returning to her Laguna Beach roots to celebrate her 20-year high school reunion. Cavallari, 38, posed in a photobooth with Lauren Olsen and more of her former Laguna Beach costars in a photo shared by Jason Wahler via Instagram on Sunday, November 30. At the bottom of the photo strip read, "LBHS Class of 2005." "20 year reunion! Such a fun time!" Wahler, 38, wrote. Laguna Beach premiered in 2004, centering around the lives of affluent high school students.