Denise Marie Nickerson was an American child actress. At the age of 13 she starred as Violet Beauregarde in the 1971 film Willy Wonka & the Chocolate Factory. She later played Allison on The Electric Company, and had recurring roles as Amy Jennings, Nora Collins, and Amy Collins in the soap opera Dark Shadows. She retired from acting in 1978 and later worked as a receptionist and office manager.

Willy Wonka & the Chocolate Factory is a 1971 American musical fantasy film directed by Mel Stuart from a screenplay by Roald Dahl, based on his 1964 novel Charlie and the Chocolate Factory. It stars Gene Wilder as chocolatier Willy Wonka. The film tells the story of a poor child named Charlie Bucket who, upon finding a Golden Ticket in a chocolate bar, wins the chance to visit Willy Wonka's chocolate factory along with four other children from around the world.