If you want to make friends with everyone in Young Hollywood, Alli Simpson is the person to know. Let's take a look at her friendship track record, shall we?
First of all, her best friend in the entire world (who is also her brother) just so happens to be famous musician, Cody Simpson. So there's that. Second of all, her bestie is former Disney Channel star Madison Pettis, so you know she's going to run with quite the famous circle of friends.
Click through the gallery to see which celebrities are in Alli Simpson's squad, then let us know: Which star would you want to be best friends with?