Daniel Radcliffe thinks Rob Pattinson is "genuinely sexy".

The 'Harry Potter' actor - who plays the boy wizard in the hit movie franchise - admits the 'Twilight' star is much more of a heartthrob than him.

Daniel - who starred with Robert in 'Harry Potter and the Goblet of Fire' - said: "Rob Pattinson is a sex symbol. He's a genuinely sexy guy - he's got the height!"

The 19-year-old actor also admitted he can't understand why girls think he is a sex symbol as he is too "nerdy".

He said: "It's very kind of them, but I don't know. If girls like short and nerdy, then I'm a sex symbol!"

Although Daniel is a pin-up with teenage girls around the world, he is rumoured to have rekindled his romance with actress Laura O'Toole and his 'Harry Potter and the Half-Blood Prince' co-star Bonnie Wright is pleased for him.

She said: "I think it's lovely he's found somebody with the same background. I think it helps when someone can understand something that you're in."