Hepburn plays Gabby Simpson - a typist in charge of getting a writer to pen a successful screenplay, while he seems to be more interested in women and drinking! Typical!
Mind you, it's an odd film even for the 1960s - I noticed in the opening sequence in Cannes there is a girl sitting writing a note in the coolest black bikini.
Just as I thought to myself - I would love that bikini - it looks epic. I gave up on trying to find it since it was around circa '65...