John Goodman wishes he wasn't so fat.

'The Monuments Men' star has struggled with alcoholism and weight problems since the beginning of his career, and although he's noticeably slimmer now than he was when he starred in 'Roseanne' and even since appearing in 'Inside Llewyn Davis' last year, he still admits that he finds it difficult to watch himself on screen.

He explained: ''I wish I wasn't as fat as I am. It just bothers me. When I saw a film in which I played Santa Claus recently, I walked away thinking, 'This is just God awful. I look terrible. I want to have my mouth sewn shut.''

The 61-year-old actor also admitted that after watching his current film 'The Monuments Men' - in which he stars as Walter Garfield alongside heartthrobs George Clooney, Matt Damon and French actor Jean Dujardin - he realised he hadn't lost as much weight as he thought he had.

He added: ''I was in pretty good shape when I got this role, but I thought I was doing better than I looked on screen. I thought I looked terrible.''

Goodman has fond memories of his time on US sitcom 'Roseanne' with actress Roseanne Barr and admits the pair unsuccessfully tried to work together again recently and that he'd still like to reunite with her.

He told The Daily Telegraph newspaper's Review magazine: ''I haven't spoken to Rose in a while. We tried to do a pilot together two years ago and NBC hated it, but goddamn we had fun ... I'd love to do something with Rose again.''