When Vin Diesel stepped out onto a balcony in Miami Beach on Tuesday, we almost didn't recognize the action star.

The 48-year-old, known for his bulging biceps and bazillion-pack abs, was showing a surprisingly cushier physique, one that we're certainly not used to seeing from him!

RELATED: This Vintage Video of Vin Diesel Breakdancing Makes Us Love Him Even More

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It's unknown whether Vin has gained weight for a new movie role or if he's simply taking a breather from his crazy fitness regimen, but the Fast and Furious actor would have gone totally unnoticed if not for his distinct (aka bald) head!

Scroll down to see more celebs who've sadly let themselves go.