Today marks the day that the "Stitches" singer officially becomes legal turning 18 years old! While we feel like this guy is an old pro in the biz, he actually wasn't even discovered until 2014. Fans could argue that he was one of the OG Vine stars which ultimately helped him rise to fame!

In the past couple of months Shawn has released some seriously awesome tracks. AND he even sent an important message to his followers about domestic violence in the video for "Treat You Better." All of this before 18? Yup – we can't wait to see what happens in the next 18!

In honor of his birthday, we decided to round up shirtless photos of Shawn because why the heck not?? LOL!

Click through the gallery and let us know which shirtless pic of Shawn is your favorite and make sure to wish him a 'happy birthday'!

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