She's a Lunatic (1958)

Jenny, a vivacious young woman, breaks up with her long-term fiancé, Kostas, on account of an innocent newspaper listing. However, as Jenny stumbles upon the handsome and affluent, Alekos Nikolaidis--without much thought--she will pretend to be rich to make an impression. Before long, Jenny hosts a marvellous and very fashionable party at an elegant villa that, obviously, does not belong to her--going as far as to hire her otherwise honest employer as her father. But, what happens if Alekos finds out Jenny's lie?