Bailee Madison (born October 15, 1999) is an American actress. She is known for her roles as May Belle Aarons, the younger sister of Jess Aarons in Bridge to Terabithia (2007). She is also known as the younger version of Snow White in the ABC fantasy drama Once Upon a Time and as Grace Russell on the Hallmark Channel series Good Witch. Other works include the horror film Don't Be Afraid of the Dark as Sallie Hurst, and the role of Maggie in the film Just Go with It and Parental Guidance as Harper Simmons. She plays Lilly Carbo in The Haunting Hour's first episode, Really You.