The last round of Prom King voting is upon us, and Justin Bieber and Austin Mahone are the two fellas you guys voted through to the finals. Both of the superstars are great Prom King material, but which of these teenage singers will be crowned the champ? It's all up to you, the readers!

Justin Bieber has been one of the hugest pop artists to hit the mainstream scene in a long time, and the 19-year-old 'All Around the World' crooner would've probably ruled his high school, if he wasn't forced into home schooling after hitting it big at the tender age of 13. Bieber's pretty much got it all -- a smile that could melt the iciest of hearts, hair almost as famous as the crooner himself, a beautiful, gravitating voice, and so, so much swag.

Meanwhile, Austin Mahone is a newer name in the pop scene, but the 17-year-old is already proving his immense amount of star power. He hasn't even dropped his first full-length yet, but he's drawn in a legion of loyal fans with singles like 'Say You're Just a Friend' and 'Say Somethin'.' Mahone is equally adorable as he is talented too. Just check out those piercing eyes and super cute smile!

So, who gets your vote for Prom King of 2013? You can vote for the guy that you think deserves the crown below! The poll will close on May 31 at 12PM EST, and you can vote once per hour until then. We'll be announcing a winner that day! Happy voting, PopCrushers!