Rhinestone

Rhinestone (1984) is a comedy directed by Bob Clark rated 4.8/10.

After a big-time country singer brags that she can turn anybody in to a country-singin' star, she's out to prove she can live up to her talk when she recruits a cab-driver as a country singer. He's scheduled to sing at a big-time NYC country night club and she puts her ample powers to work in preparing her protege.