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."
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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.