Smashing Time (1967)

Watch Smashing Time: Two young women from England's northern counties; the plain Brenda and the flamboyant Yvonne, arrive in London to find fame and fortune. Misdirected and separated, they strike out on their own with Yvonne becoming a model and Brenda a waitress. After Brenda sabotages Yvonne's date whom takes advantage of her, they lose their jobs and soon the roles are reversed with Brenda succeeding as a model and Yvonne becoming a waitress. With both of them competing with the other, they soon learn that they have to team up to take on their adversaries in order to succeed.