Can we just officially name June 16 an international holiday? Today is a big birthday for three of our fave hot guys ever: James Maslow of Big Time Rush, Keaton Stromberg of Emblem3, and Luke Hemmings of 5 Seconds of Summer. Luke and Keaton are both celebrating their 18th birthdays today while James is turning 24, but their shared date of birth isn't the only thing the three guys have in common. They're all incredibly talented singers in our fave guy groups, and they all happen to look totally amazing shirtless!
Celebrate each guy's big day by clicking through the gallery above to see the hottest shirtless pics of the birthday boys! Then, share your best wishes for all three in the comments section below!