The whole world has watched Prince William grow up, from his first adorable baby pics, through his schooling, and right up through his wedding. And now he's going to be a father!
On his 31st birthday, let's take a look back at some photos of him over the years. Gosh, Kate Middleton snagged a really good one. They were so cute together in college (and always)!
Do you pay close attention to the royals? Do you feel attached to Prince William after watching him grow up? Do you think the royal baby will look like him? Tell us in the comments below or tweet us @OKMagazine.