The Top 21 under 21 Music Stars of 2014 | @Billboards @Juelsofrome

What’s it like to become a music star with millions of fans before being able to legally order a beer to celebrate those achievements? These 21 artists know the feeling. Welcome to Billboard.com’s 2014 edition of 21 Under 21, our annual ranking of music’s most powerful minors, and perhaps the most impressive crop of under-21 stars we’ve ever assembled.