#24. Azealia Banks (21)

 The Harlem-bred MC first popped on the rap scene after topping NME's "Cool List" in 2011. Since then, she's earned positive reviews with her Coachella set, 1991 EP and mer-themed mixtape. She was also responsible for some Twittersphere controversy, earning the ire of fellow rappers including Iggy Azalea, Lil Kim and Nicki Minaj.