British boy bander Harry Styles turns 19 today! The One Direction crooner got his start on Britain’s The X Factor in 2010, and went on to become an international sensation, winning over the hearts of teen girls (and beyond) with his cheeky grins, free-flowing locks, and goofy sense of humor. To celebrate the last year of his teens, take a peek at Harry's groovy dance moves in 1D's throwback music video "Kiss You." Happy birthday, Harry!
Plus, check out our favorite boy band of yesteryear, the Backstreet Boys!