Robert Pattinson is struggling to deal with his fame since Twilight became a worldwide sensation, one of his co-stars has admitted.

Ashley Green, who plays Alice Cullen in the vampire series, said Pattinson was “kinda freakin' out” over his popularity.

"Oh God. Poor Rob is already a Beatle," she told Nylon magazine. "His whole life is documented.

“If he picks his nose, it's all over the Internet. He's just done for. I think he's kinda freakin' out, like, 'What the f*ck is going on?'"

Pattinson, 23, plays vampire Edward Cullen in the Twilight Saga, and will reprise his role in the next film, New Moon, released in November.

Greene's comments come days after actress Megan Fox also compared Pattinson's fame to The Beatles.

Speaking at a red carpet premiere for Transformers - Revenge Of The Fallen, Fox said the actor's fame was as "crazy as it gets".

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