Billboard's Hottest 21 Under 21

:21. Victoria Justice 20. Ross Lynch 19. Madeon 18. Miley Cyrus 17. 3BallMTY 16. Bridgit Mendler 15. IU 14. Megan & Liz 13. Mindless Behavior 12. Cody Simpson 11. Jackie Evancho 10. Nick Jonas 9. Earl Sweatshirt 8. Cher Lloyd 7. Porter Robinson 6. Selena Gomez 5. Mac Miller 4. Scotty McCreery 3. Demi Lovato 2. One Direction 1. Justin Bieber

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