Robert Pattinson has joked about the sex scenes in 'Breaking Dawn', claiming it could become a 'hardcore saga for adults.'

He said: 'Bella becomes a vampire in this movie. We get married and sleep together. I haven't read the script yet but I'm sure it'll be good. I'm wondering how they will be able to translate this on screen. We'll end up with an R-rated movie. Can you imagine if we decided to go in and turn 'Twilight' into a hardcore saga for adults with sex scenes and everything?'

'We’ll end up having to ban it for people under 16. Summitt would suddenly become the most progressive studio in the world. It would be funny.'

This week Robert Pattinson has also revealed that the final movie in the 'Twilight' series, will be split into two films, with the first due for release in November 2011.

Hot on his heels Summit Entertainment confirmed the final installment - which stars Pattinson as vampire Edward Cullen and Kristen Stewart as his girlfriend Bella Swan - will be split into two separate projects.

The project, based on the fourth novel in author Stephenie Meyer's 'Twilight' series, is currently being written by Melissa Rosenberg with Meyer's producing. 'The Twilight Saga: Breaking Dawn' will start production in the fall.