Kristen Stewart impressed the director with her ''vampire orgasm'' in 'Twilight'.

Bill Condon - who was at the helm of the final two instalments of the film adaption, 'The Twilight Saga: Breaking Dawn - Parts 1 and 2' - has revealed he was impressed with how she acted in a particular scene.

He said: ''I'd been a fan of Kristen's before Breaking Dawn, and I loved working with her.

She's incredibly smart and committed, she played such a range of emotions across a single film, from wedding jitters to death throes to vampire orgasm - I mean, if you can pull that off, you can do anything.''

And whilst 'Twilight' has seen its fair share of critics, Bill is glad he got the chance to ''channel his love of classic horror films'' into the flick.

He told Vanity Fair magazine: ''One of the reasons I wanted to do 'Breaking Dawn' was that it really was a chance to channel my love of classic horror films into this massive pop phenomenon.

''In a lot of ways, the climax of 'Breaking Dawn, Part 1' is a recasting of one of my favourite films, James Whale's 'Bride of Frankenstein'. Bella's death and rebirth represents Edward turning her into a monster, re-creating her in order to save her. It was something that I felt reflected my lifelong love of the macabre ... to say nothing of the fun I had shooting a huge wedding cake made of bloody corpses. I'm glad they let me drop that in.''