Robert Pattinson adopts a serious approach to personal hygiene, according to his Twilight co-star Bryce Dallas Howard.

Rob, who plays vampire Edward Cullen, has previously claimed that he does not “see the point” of washing his hair.

But Bryce has revealed that the 23-year-old British actor is actually very hygienic.

In an interview with New York Magazine, the actress said Rob once damaged a tooth because he had brushed them some much.

"[Robert] was like, 'Oh, I have to go to the dentist.' And I was like, 'Oh no, what happened? Just a check-up?' And he was like, 'No, I chipped a tooth',” she said

"I was like, 'How?' And he was like, 'Flossing.' Who does that? I don't even floss. So he's hygienic. Trust me."

Bryce, who will play Victoria in The Twilight Saga: Eclipse, also said her co-star was a “sweet young man”.

Robert Pattinson in pictures