Denise Nickerson
Denise Nickerson (April 1, 1957-July 10, 2019) was an American former actress best known for her roles as the gum-chewing Violet Beauregarde in the 1971 movie Willy Wonka & the Chocolate Factory as well as Amy Jennings and Nora Collins in the soap opera Dark Shadows. Description above from the Wikipedia article Denise Nickerson, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Known for
Dark Shadows
1966
The Brady Bunch
1969
The Electric Company
1971
Willy Wonka & the Chocolate Factory
1971
Flipper
1964
Search for Tomorrow
1951
After They Were Famous
2002
Smile
1975
Howard
2018
The Koozebanian
1978
Pure Imagination: The Story of 'Willy Wonka & the Chocolate Factory'
2001
Zero to Sixty
1978
Child of Glass
1978
The Dark Side of Innocence
1976
Celluloid Bloodbath
2012
The Neon Ceiling
1971
Dark Shadows: The Haunting of Collinwood
2009
The Man Who Could Talk to Kids
1973