Celebrities aren't exactly known for their brain power. They already have looks, talent, and money, no one wants to think they could be smart too! But, sadly, a lot of them are.

It's pretty tough to get to the top of the Hollywood food chain without having something rattling inside that big old head besides kale chips and Swarovski crystals. Some celebs are even, dare we say it, bonafide geniuses -- and have been since they were kids! Here are 11 unexpected celebrities who were whiz kids. (No, Justin Bieber is not on this list. Neither is Kim Kardashian.)