When you watch your fave show each week or fall into a YouTube vortex watching tons of videos of your favorite singer, you might not actually realize just how old they are. A bunch of stars (even ones who play high schoolers on TV and in movies) are sometimes way older than you realize and even if they look like they’re a teen, they’re actually in their 30s! And then there are stars you’ve grown up watching that you seriously can’t believe are in their 30s already because they’re forever in your mind how old they were when you first became a fan. (We’re looking at you, the High School Musical cast.)

But celebs are just like us and yes, they have birthdays and naturally get older. Even if they don’t look their actual ages!

Check out the gallery to see 10 stars you probably had no idea are in their 30s.

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