But instead of helping him fine-tune his craft, bubbly Cameron has only been exercising his laughter muscles.
A source says, "Cameron offered to help but every time they get down to it they just end up falling about giggling.
"Justin's nervous about being on screen with two acting legends. He's realising Cameron is not the right person to lend a hand. They enjoy having fun too much."16/02/2004 13:48