It's been four long years, but The Hills ends this evening when the series finale airs on MTV. It's last episode in their sixth season — have you been paying attention to all the drama? We took a look back at how the stars, like Lauren Conrad, Heidi Montag, Audrina Patridge, and Lo Bosworth, have changed over the years with our special slideshow. One of the show's leads, Kristin Cavallari, recently warned that nothing you see on TV is real, but The Hills has nonetheless been a cultural phenomenon. So, tell us — will you tune in tonight for the series finale?