James Corden refused to bare his butt on the set of his latest movie.

The British comedian is so self-conscious about his "fuller figure", he requested a stunt double to shoot his nude scenes in upcoming film 'Gulliver's Travels'.

The 31-year-old actor - best known for writing and starring in hit UK comedy series 'Gavin and Stacey' - was reportedly worried about what his co-stars Jack Black, Billy Connelly and Catherine Tate would think of his "cuddly" body.

A source told Britain's The Sun newspaper: "James was showing off a bit in front of the extras and making everyone laugh. But he got the hump when the director reminded him that there would be some close-ups of his backside.

"James really didn't want to do it and there was a bit of a set to. Eventually the director decided he would hire a body double to save his blushes. It took a while to find someone who had the same full figure.

"But eventually they sourced the right extra and they filmed him from the waist down. In the final film you will not realise it's not James."

Corden has been shooting the film - based on Jonathan Swift's classic novel - in Greenwich, South East London, for the past few weeks.