Looking Back: Discover How Much the 'Liv and Maddie' Characters Have Grown Up from the First Season to the Last

Today is a very sad day for both the cast of Liv and Maddie and fans of the beloved Disney Channel series. It feels like just yesterday when we were first introduced to the show, but it is already coming to an end. Yep, that's right. Tonight is the very last episode of Liv and Maddie: Cali Style.

Liv and Maddie first aired in 2013 and a lot has changed since then – especially the cast. The characters on the show (along with the stars who play them) have seriously grown up since season one, and their transformations throughout the course of the series prove they really did spent a huge chunk of their lives telling the Rooney family stories to the world.

In honor of the finale tonight, we are celebrating the series by taking a look back at the cast's evolutions from the first season to last. From Dove Cameron going blonder to Tenzing Norgay Trainor growing up before our eyes – these transformations will seriously hits you with all the nostalgia.

The final episode, titled "End-a-Rooney," airs tonight, March 24 at 5:30 PM Eastern Standard Time.

Click through the gallery to see how much the Liv and Maddie character's looks have evolved from Season One to Season Four.