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Do you remember Liar Liar? The film told the story of Fletcher Reede, a lawyer played by Jim Carrey, who was trapped in a web of his own lies - until his son, Max, made a birthday wish.

His dad could no longer tell any lies.

Max was a real cutie back in the day (check out that blond bowl cut) - but he’s not so cherubic these days.

Now actor Justin Cooper is all grown up - and completely unrecognisable.

The funny yet heart-rending film brought in over £125 million at the box office.

But gone is the blond hair and chubby cheeks, replaced by a shaved head and goatee beard.

Though Justin rose to fame as a child actor in films like Liar Liar and and TV shows like Boy Meets World, The Boy’s Are Back and Brother’s Keeper, he ended up rejecting a life of acting so that he could go into sports production.

It seems that sport is really where Justin’s passion lies.

He now works as a producer for the Ben Maller show on Fox Sports Radio - staying strictly off camera.

He leads a pretty low-key life on social media, tweeting mostly about sports.

Good on Justin for following his dreams - though he'll always be remembered as the cute kid with the shaggy hair from Liar Liar.

See more shock celebrity transformations here: