Wildcats, it's been ten years since High School Musical premiered on the Disney Channel! Can you believe it?! The cast is reuniting for their ten-year anniversary, and they've changed a lot since 2006. It's nostalgia time, and we're going way back to what the Vanessa Hudgens, Zac Efron, and more HSM stars looked like years ago — the jump is noticeable.

Click through to see then-and-now photos of the cast, and let us know if you miss the movie in the comments!

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