'Right now, I'm at 210 [15st],' he says of his current weight, which is already around 20lbs heavier than he was in 2009.
'Darren said with the last one, 'Hey you looked great, but you're so tall that in those long shots you looked kind of like Clint Eastwood, and that's not Wolverine,'" Jackman told the LA Times newspaper.
'He said that Wolverine, in the comics, is powerful, stocky...he's short and thick. So he said, 'I want you to go there, get bigger.'"
Jackman joked: 'If I have a massive heart attack, well, you tell everyone what I was going for.'
The actor promises the new film will be ‘the best of the bunch’.
It's not the first time Aronofsky has demanded a dramatic transformation from one of his actors - he famously asked Natalie Portman to shed 20lbs to play a ballerina in Black Swan.
The Wolverine is scheduled for a 2012 release.
Source: mailonline