Shawn Mendes and Justin Bieber are two of today's sexiest songstresses, and today we're seeing which one of these hung hotties has a bigger mic! Both Mendes and Bieber have bulged out in a major way, so peep their goods right here and let us know who wins this Battle of the Bulge!

Justin Bieber is the tatted bad boy to Mendes' sensitive crooner, but both have equally shredded and toned bods. Plus, you can actually catch both Shawn Mendes and Justin Bieber in just their tight boxer briefs thanks to their campaigns for Calvin Klein. Owe ya one, Cal! As if that wasn't enough, both Justin and Shawn have gotten all kinds of sensual for their panty-wetting music videos.

Now all you need to do is check out their supremely sexy scenes in this handy dandy Mr. Man-dy video, and then use the Twitter poll to vote for which bulge you think is... Yummy!