The Hills’ premiered on MTV in 2006 as a spin-off to the beloved reality series, ‘Laguna Beach.’ The show followed Lauren Conrad as she built a life in Los Angeles, attending fashion school and working at an internship for ‘Teen Vogue.’ It was on for six seasons until 2010, with Kristin Cavallari replacing Lauren as the narrator halfway through season five. In 2019, MTV re-booted the series and aired ‘The Hills: New Beginnings,’ with many of the original cast members. Some of the most well-known reality stars, like Lauren, Kristin, Brody Jenner, Spencer Pratt, Heidi Montag, Audrina Patridge, and more, have come from ‘The Hills.’ All of them have grown up in a big way since they were first on the show, and it’s quite wild to see their transformations from then to now. Keep clicking through the gallery to check out before and after pics of ‘The Hills’ cast.