Young Hollywood isn't quite so young anymore. This weekend, Ansel Elgort turns 21, joining the ranks of several other celebrities who reach the milestone this year. Justin Bieber will continue his 21st birthday festivities later this month with his Comedy Central roast, and after growing up on screen for more than a decade, Dakota Fanning celebrated the big 2-1 earlier this year. Ahead of Ansel's birthday, take a look at some of the famous actors and musicians who turn 21 in 2015, and then check out the hotties turning 30 this year and the best dressed stars under 21!
from POPSUGAR Celebrity http://ift.tt/1HForY1