LONDON: Naomi Watts shares the same cheeky sense of humour as Princess Diana.  The actress - who plays the late Princess of Wales in new biopic ‘Diana’ - enjoys telling salubrious jokes to entertain her co-stars on set, much like the People’s Princess, who tragically died in a car crash in Paris in 1997.

Director Oliver Hirschbiegel quipped: ‘’Regarding similarities between Naomi and Diana - they both like to tell dirty jokes!’’  A bashful Naomi blushed: ‘’Yes, why not? A good dirty joke, every now and then. Early in the morning, [on set] before conquering the day! Diana used to do that too, that’s true.’’–EX