The Betsy (1978)
The Betsy is a 1978 film made by the Harold Robbins International Company and released by Allied Artists and United Artists. It was directed by Daniel Petrie and produced by Robert R. Weston and Emanuel L. Wolf with Jack Grossberg as associate producer. The screenplay was by William Bast and Walter Bernstein, adapted from the novel of the same title by Harold Robbins.
More at Wikipedia.