Today, Prince William turns 30. Reportedly tuckered out from all the Diamond Jubilee festivities, the Duke of Cambridge is said to be celebrating in a “low-key” fashion, probably eating birthday cake with Kate, Harry, the Queen, and her corgis, all of whom should be wearing birthday hats. But in honor of this momentous day, we’ve collected 30 years’ worth of Wills photos for you to pore over. So click ahead to see shots of William taking his first steps, kissing Kate on his wedding day, playing polo, hauling lumber, wearing a Speedo, and more! Happy birthday to you, William.