Hollywood is filled with so many beautiful and talented adults, but what about all the beautiful and talented young people?
There are so many amazing artists in music who can't legally make any decisions for themselves or have a quick drink at the bar, but they can sell out shows in seconds and sell millions of records.
From cookie-cutter pop stars to certified gangsta rappers, these hip-pop stars are the voice of the future and the face of music's next generation.
GlobalGrind rounded up 21 of music's hottest hip-pop stars under 21.
Check out the 21 hottest hip-pop stars in the gallery above!