
While filming her nude scened in Welcome to L.A. (1976), one of the first experiments with digital photography involved positioning Chaplin's head on the body of a former Penthouse Pet. This became necessary to avoid embarrassing her father ('Charlie Chaplin') prior to his death. Although she was anxious to perform in the nude, director Alan Rudolph feared the loss of financing if Lion's Gate Films and producer Robert Altman fell into disfavor with the World Famous Film Icon. Ultimately, Geraldine Chaplin performed the scene in a nude body stocking and it took almost an entire month, using antiquated production equipment, to digitally transfer the nude body to the head of Chaplin. In turn, this put the production way over budget and as a result, John Wayne was replaced by Denver Pyle as the father of Keith Carradine.
(imdb.com)