Happy Throwback Thursday, M Girls! If you loved finding out who voiced your favorite animated characters, then you're totally going to be shocked (in a good way) when you find out what movies and TV shows we spotted your favorite stars in before they were famous!
From Selena Gomez in Spy Kids 3D to Ashley Benson's Nickelodeon debut, M rounded up 13 stars who've had roles you either didn't know about, totally forgot about, or just didn't recognize them in. Ready to get your mind blown? Sit back, relax, and click through the gallery!
Which star do you think has changed the most? Tell us in the comments! Do you have a friend who really loves celeb trivia? Be sure to share this feature with her!