In a world with nearly 7 billion people, chances are someone famous is celebrating their birthday today.
And indeed: Bristol Palin, Zac Efron, and more will all be blowing out candles today. Will it be your favorite TV personality? Maybe an important figure from history?
Help us celebrate the birth of some of the world's coolest people by taking a scroll through some of the most noteworthy birthdays of October 18th -- enjoy!
Click here for a look at yesterday's celebrity birthdays!