40 Celebrities You Won't Believe Are Over 40

On his birthday this year, Home Alone actor Macaulay Culkin tweeted a message that rocked his followers who've been watching him since he was a child star: "Hey guys, wanna feel old? I'm 40. You're welcome." Culkin isn't the only famous face we somehow think of as ageless, whether that's because they first broke out in show business playing teenagers or just seem to be eternally youthful in real life. The following 40 celebrities are 40 or older, though it may be difficult to believe. And for stars who totally changed their appearance for their work, here are 14 Actors Who Looked Unrecognizable in Major Movies.