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John Stamos is 49 and fine!

The former "Full House" star celebrates his birthday today -- and to mark the occasion, we're taking a look at how well he's aged through the years.

He was always hot as Uncle Jesse back in the day and managed to be one of the few who could rock a mullet and still look cool. But even 17 years later, he's still one of the sexiest on the scene.

Check out how his personal style evolved through the years in the gallery above.

Have mercy!

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