Remember when Alyson Stoner was a child star? You'll never believe how much she grew up right in front of our eyes!
In the gallery below you can click through to see which other stars grew up way too fast for our liking as well! Stars like Selena Gomez, Miley Cyrus, Dylan & Cole Sprouse and more. You won't believe the extreme transformations of some of your favorite celebs!
Visit the comments section to let us know which transformation shocked you the most!
Alyson Stoner charmed us all in The Suite Life of Zack & Cody and danced her pants off in the Step Up movies.
Click to see what she looks like now.