Wow. Has it been 11 seasons already?

Marg Helgenberger, better known as CSI's Catherine Willows, is saying farewell to the show she's been the star of since the beginning of the new millennium.

If you are a fan, make sure to catch her final two episodes airing January 18th and 25th, in which Catherine will make a life-changing decision that forces her to leave the team for good.

The teaser already has us in tears! We have a feeling these are going to be VERY emotional episodes.

In case you're wondering who could ever replace her, it will be your favorite babysitter to have adventures with, Elisabeth Shue! She'll be playing a character named Julie Finlay who is introduced in February.

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