John Goodman Shows Off Shocking Weight Loss

PHOTO: Before and after images of actor John Goodman on Feb. 7, 2009 in Berlin and again on Oct. 8, 2015 in London.Dominique Charriau/Getty Images | David M. Benett/Getty Images
Actor John Goodman attends the "In The Electric Mist" photocall during the 59th Berlin International Film Festival at the Grand Hyatt Hotel on Feb. 7, 2009 in Berlin and attends the Accenture Gala Screening of "Trumbo" during the BFI London Film Festival at Odeon Leicester Square on Oct. 8, 2015 in London.

John Goodman showed off some drastic weight loss Thursday night at the London premiere of his new movie "Trumbo."

Goodman, 63, appeared so thin that he almost looked unrecognizable.

The veteran actor has spoken in the past about his struggles with weight, saying he once topped 400 pounds. But whatever he's doing now, it's definitely working.

His rep told ABC News that it's basic exercise and diet that the actor is focusing on now.

This isn't the first time Goodman has slimmed down. In 2010, Goodman lost more than 100 pounds.

"I wanted to live life better," he told People magazine at the time, adding that he quit drinking worked out six days a week.

He also told David Letterman during that time that he knows his weight will be an ongoing battle and that "I'm not gonna look like Paris Hilton or anything."