Young stars are completely ruling Hollywood and let’s be honest – they’re our absolute favorite to report on. So when Billboard announced their "Top 21 Arists Under 21," you know we were all over it!

From the best up and coming musicians to a certain British boy band that is dominating the entire world, we pretty much agree with every, single one on this list. We’d probably switch a few around, Fifth Harmony for example.

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Obviously One Direction takes the number one spot – they are a ruling the world right now and all. Justin Bieber comes in at number two, despite all the negative press he’s been getting this year, and Miss Miley Cyrus rounds out the top three. Anyone else think that they should have switched Bieber and Miley? Anyone?

The full list goes a little something like this…

1. One Direction

2. Justin Bieber

3. Miley Cyrus

4. Ariana Grande

5. Earl Sweatshirt

6. Lorde

7. Austin Mahone

8. Scotty McCreery

9. Cody Simpson

10. Emblem3

11. Cher Lloyd

12. Chief Keef

13. Bridgit Mendler

14. Miguelito

15. Joey Bada$$

16. Tori Kelly

17. Martin Garrix

18. Mindless Behavior

19. Matty B

20. Lee Hi

21. Fifth Harmony

What do you think of the full list? Do you agree at 1D should be number one?

And who surprised you?