We can't get over how cute this singer's dimples were when he was a kid!

We'll admit it -- he still has our hearts, even as an adult. Who can resist his great sense of humor and enormous talent? You might have caught him on his recent summer tour and you'll definitely recognize him from his hit TV show. He's so talented, in fact, that he's a part of not one, but two bands!

Think you know who it is? Click here to find out if you're right!