The 58-year-old 'Inglorious Basterds' star portrays Keane's late husband, con artist Walter, who infamously took credit for his wife's artwork in the 1950s and '60s, when her paintings of waif-like figures with huge eyes became popular, reported New York Post.
Keane was so happy with the final edit of the film, she invited Burton, Waltz and his co-star Amy Adams, who played Margaret, to each pick out a portrait for themselves.