Robert Pattinson's fame is getting in the way of his work. David Cronenberg, who directed the young star in his new film 'Cosmopolis'  admitted that Pattinson's fame can be a real pain on the set.

While the veteran Canadian filmmaker admits RPatz is a great actor and that he was thrilled with his work, his popularity made shooting difficult.

"Actually the fame was a detriment," Cronenberg told CBC. "I mean, it's good for financing - but it's not necessarily good when you're on the street and there are a lot of Twihards around. But I think people will be really surprised, I mean, I think he's a terrific actor and that's why I went after him."

The release date of 'Cosmopolis' has yet to be announced.