ბიოგრაფია: From Wikipedia, the free encyclopedia. Jennifer Lindsay Stone (born February 12, 1993) is an American actress best known for playing Harper Finkle on the Disney Channel series Wizards of Waverly Place and Harriet Welsh in the Disney Channel film Harriet the Spy: Blog Wars. Description above from the Wikipedia article Jennifer Stone, licensed under CC-BY-SA, full list of contributors on Wikipedia