Robert Downey Jr. is a super hero.
Here's the 22-year-old "Less Than Zero" star back in 1987 (left) -- and 23 years later, the 45-year-old version at an event in Beverly Hills last month (right).
Iron man, indeed.
Robert Downey Jr.
or Good Docs?
5/9/2010 4:35 AM PDT BY TMZ STAFF
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