Today, April 26, 2019, is a very important day. And that’s because it’s Jason Earles‘ birthday! That’s right. The actor we know and love as Miley Stewart’s older brother in Hannah Montana is turning 46 years old today.

Wait, did we just say 46? Yep, we did. It may be hard to believe but the Disney star is actually 16 years older than the actress who played his TV sis — Miley Cyrus. That means he was 34 years old when the show premiered. Say what?! But his character was supposed to be only a few years older than her?

Well guys, since most older stars can get away with playing much younger roles, it’s safe to say that looks can be deceiving. It’s easy to assume that TV costars are the same age or close in age — especially if they’re playing on-screen siblings, besties or couples. But it turns out, there are a ton of TV costars who have seriously shocking age gaps. Scroll through our gallery to discover all the TV costars with major age differences, and prepare to be shook.

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