Jason Alexander – 40 lbs

Jay Scott Greenspan, better known as Jason Alexander, is a 61-year-old American actor who has been in show business since the ’80s. In a career with over 140 acting credits, his roles of George Costanza, Phillip Stuckey, and the titular character in Seinfeld, Pretty Woman, and Duckman, respectively, stand out.

A happily married man since 1982, Alexander went through a physical transformation in 2010. He followed the Jenny Craig method and managed to lose his goal weight of 30 pounds, as per Cision PR Newswire. Alexander appeared in Harley Quinn and Young Sheldon and is also scheduled to voice Noah Brooks in The Gettysburg Address.