Kate Middleton turns 30 today! In honor of her milestone, we're taking a look back at images from her childhood, college years, and romance with Prince William. The past year has been an amazing one for the Duchess of Cambridge. From her much-watched wedding on April 29, 2011 to her and William's North American tour, Kate enjoyed 12 months full of highlights. She's eased into life with the royals with grace and class, and now, having announced the charities she'll work with, is beginning a career in the public eye. It's been fun for us to watch Kate assume her new roles — happy birthday to the duchess, and click through to see 30 great Kate photos!