Pretty Woman is a 1990 American romantic comedy film directed by Garry Marshall, from a screenplay by J. F. Lawton. The film stars Julia Roberts and Richard Gere, and features Héctor Elizondo, Ralph Bellamy, Laura San Giacomo, and Jason Alexander in supporting roles. The film's story centers on Hollywood prostitute Vivian Ward and wealthy businessman Edward Lewis. Vivian is hired to be Edward's escort for several business and social functions, and their relationship develops during her week-long stay with him. The film's title Pretty Woman is based on the 1964 song "Oh, Pretty Woman" by Roy Orbison.

References:
https://en.wikipedia.org/wiki/Pretty_Woman