Bust out your party hats, because today is Billy Unger's birthday! The Lab Rats actor is turning 20 years old, and that's quite the occasion to celebrate. In honor of his big day, we're rounding up just a few of his best red carpet style moments – TBH, we could go on forever picking these – and just appreciating his amazingness.
Click through the gallery to see Billy's hottest red carpet looks of all time. Then, make sure to wish him a very happy birthday in the comments section below.