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.
See the full list after the jump!