Age is always a weird concept. Some people might feel, look or act older or younger than they really are, and others might think they're an age that's no where year their actual number. Surprisingly, the same goes for celebs too! Those who star as teens on TV, really aren't and others who have been around for years that feel like they're much older than they are, are still young. It's all rather complicated when you think about it.
Click through the gallery to find out just how old some stars really are. Then tell us in the comments if any of these surprise you!
Dove Cameron stars as teenage twins on Liv & Maddie but the actress and singer is actually 20 years old IRL. And she's often reminding everyone on social media that she's much older than she may look.