The inshine girl (1970)

Della Lane and Venetia were the best of friends, and Della was the nicest of girls, but she was so attractive that unfortunately she always managed to outshine Venetia. When the pair of them went to Africa to work for several months they were sure things would be different -- for didn't everyone know that in Africa the ratio of men to women was about ten to one? Unfortunately it didn't work out that way, and the glamorous Della just couldn't help outshining Venetia all the time. Simon Manville tried to console Venetia by assuring her that it was the "inshine girls" that men usually wanted to marry -- but could Venetia believe that?