Photo: Getty Images1/15Prince George arrives in Germany earlier today.
Photo: Shutterstock2/15Prince George looked pouty in Poland when he landed on Monday.
Photo: Getty Images3/15Prince George visits a helicopter in Hamburg, Germany.
Photo: Getty Images4/15The Prince’s christening.
Photo: Getty Images5/15An early trip to Australia.
Photo: Getty Images6/15One of the Prince’s first portraits.
Photo: Getty Images7/15Prince George happily looks out a window.
Photo: Getty Images8/15Playing, and tumbling, in the grass.
Photo: Getty Images9/15His infamous nose-squishing incident.
Photo: Getty Images10/15Prince George seen at Princess Charlotte’s christening.
Photo: Getty Images11/15Blowing bubbles, delightedly.
Photo: Getty Images12/15Prince George held his father’s hand when he arrived in Canada.
Photo: Getty Images13/15Clapping for joy.
Photo: Getty Images14/15Prince George served as a page boy for his Aunt Pippa Middleton’s wedding, but was scolded by his mother.
Photo: Getty Images15/15At the Trooping of the Colour earlier this year.