Big Fish is a 2003 American fantasy drama film directed by Tim Burton, and based on the 1998 novel Big Fish: A Novel of Mythic Proportions by Daniel Wallace. The film stars Ewan McGregor, Albert Finney, Billy Crudup, Jessica Lange, Helena Bonham Carter, Alison Lohman, Robert Guillaume, Marion Cotillard, Steve Buscemi, and Danny DeVito. The film tells the story of a frustrated son who tries to distinguish fact from fiction in the life of his father, a teller of tall tales.
Burton focused on the story and limited the use of digital effects. Costume designer Colleen Atwood created special dresses for identical twins Ada and Arlene Tai. One set of dresses created the effect of fused twins on camera, while another set enhanced the added CGI of conjoined twins.