Cherrybomb, a sex, drugs and rock 'n' roll film in which three teenagers spend a wild and life-changing weekend, sees Rupert strip himself of Harry Potter character Ron Weasley and his clothes.
The young British actor told us at the film's exclusive celebrity screening at Beaufort House last night that he felt 'very embarrassed' when filming his first sex scenes and he stuttered that he 'didn’t really know where to put his hands!'
And what did his mum and dad say when they saw his raunchy, topless scenes? ‘We don’t talk about it! Nobody mentions it!'
Friend and fellow Harry Potter cast members turned up to support Rupert and other cast members Robert Sheehan and Kimberly Nixon, including twilight heartthrob Jamie Campbell Bower.
We asked Jamie if there was any competition between the Harry Potter and the Twilight boys? 'Of course not!' he laughed. 'We’re all good mates'.
By Marisa Bate