Actor Jonah Hill will be hitting the big screen again in '21 Jump Street,' but before he could fight any crime, he needed to shed some pounds.

Hill looked noticeably lighter when he hit the red carpet at the Venice Family Clinic Silver Circle 2011 Gala in Beverly Hills last month.

According to Us Weekly, Hill had a goal to lose 30 pounds before production began on the action film, based on the hit 1980s TV show starring Johnny Depp.

Hill penned the script for the movie himself, telling MTV News, "It's an entirely new imagination of what '21 Jump Street' is. We're not doing a spoof whatsoever. It will be crazy characters that are in very unreal circumstances sometimes."

But losing the weight for the role wasn't an easy battle for the comedy star. A friend close to the actor claims he "went on a diet for the movie, but gained weight at first!"