Not only will we miss Demi's judging, but we're going to miss seeing what she wears week after week. So, in honor of the star's departure and this season coming to an end, we're looking back at Demi's most memorable X Factor looks of all time.
Be sure to tune into The X Factor on Fox at 8 p.m. EST tonight.
Click through the above slideshow to see more of Demi's outfits. Then tell us which one is your favorite in the comments.