Prince George may be well known for his unimpressed faces [1] and other hilarious expressions [2], but he also has one adorable smile. From his 2013 holiday portraits [3] to his first snaps with baby sister Charlotte [4], Prince George's beam might take the cake for his cutest look of all. The 2-year-old royal doesn't often grin, but when he does, it's contagious! Scroll through to see for yourself.