From correspondents in London, England, 10:30 PM IST

Actor Mickey Rourke is struggling to lose his beefed-up physique from the 2008 Oscar-nominated movie 'The Wrestler' in time to begin filming the new 'Iron Man' sequel in the summer of 2009.

Rourke, 56, gained over 13 kg of muscle to play washed-up grappler Randy 'The Ram' Robinson in the movie. But 'Iron Man 2' director Jon Favreau has ordered him to slim down for his role as Russian villain Whiplash in the new superhero film, reports contactmusic.com.

The Manhattan-based movie star's trainer is helping him shed the excess weight by putting him on a diet and only allowing him to dine out once a week.

(Staff Writer, © IANS)