Ah, the pretty glittering sheen that the vampires give off when exposed to sunlight.

It's one of the big changes Meyer has made to the traditional vamp lore - as the creatures have, in the last few decades, been more known to burn up in direct sun.

It was a big subject for New Moon director Chris Weitz. "We've got a really good run at the sparkling. It's trying to do the same thing that they were trying to do in the first film, in that he shines like a diamond.

"I think that we're re-exploring making him sparkle in different ways. And really the attitude was, because in book two, his sparkling could get him killed so it's kind of a big effect on this one. The guy's gotta sparkle…"