Which guy deserves the title of #1 cutest guy of all time? M is counting down 15 of the cutest guys and since there are so many to choose from, narrowing down our list was pretty hard.
From Justin Bieber to Austin Mahone, there are tons of super adorable celebs who dazzle us not only with their dance moves and voices but with their amazing smiles, too.
Want to find out who we named the cutest guy of all time? You'll have to click through the gallery below! Who do you think is the cutest? Tell us in the comments!