The actor looked slim at the Trumbo premiere

By Sheila Cosgrove Baylis
Updated October 09, 2015 12:00 PM
Credit: Valerie Macon/Getty; Mike Marsland/WireImage

John Goodman has had an up-and-down weight loss journey, but now he’s looking fitter than ever.

The actor, 63, showed off his new, slimmer look at the Trumbo premiere in London Thursday night, giving his costars Bryan Cranston and Adewale Akinnuoye-Agbaje some competition in the who-looks-best-in-his-suit department.

Goodman has been open with his weight struggle over the years, previously joking with PEOPLE, “It takes a lot of creative energy to sit on your ass and figure out what you’re going to eat next.”

The 6’2″ actor admitted to David Letterman in 2011 that his weight tends to fluctuate and that he was “pushing 400” lbs. at his heaviest.

Previously, the actor said he lost weight by cutting sugar and alcohol from his diet and working out six days a week.

Trumbo is the story of successful Hollywood screenwriter Dalton Trumbo who was blacklisted for being a Communist in the 1940s. Cranston plays the titular role, and the film hits theaters Nov. 6.