Did you know that Lucy Hale guest starred on Drake & Josh way before we knew her from Pretty Little Liars? A bunch more of your favorite celebrities were in one or two episodes of the Nickelodeon show before they were famous, too!
Click through, then let us know in the comments below who you're the most surprised to see on the show. How many guest stars do you remember?
Drake & Josh was one of the first TV shows Lucy guest starred on!