Definitely. 'Big Eyes' has roots in true occurrences, although it might have fictionalized certain aspects to make the story more engaging and accessible to a wider audience.
Yes. 'Big Eyes' is based on the true story of Margaret Keane, a painter who was famous for her paintings of big - eyed children. Her work became very popular in the 1960s, but there was a controversy as her husband, Walter Keane, took credit for her paintings for a long time.