John Stamos has always been a heartthrob -- with one amazing head of hair!

The "Grandfathered" star blessed us with an amazing blast-from-the-past prom photo that proved (as if we needed proof, but still) he has always been easy on the eyes.

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Stamos posted the throwback to Instagram on Friday, which showed him dressed in an all-white ruffled suit with red stitching down the front and a big bow tie. He captioned the pic with three simple hashtags: #TBT, #Prom and #Hair.

Seriously, that hair. Total perfection!

Even though he looked like a million bucks in high school, the 53-year-old actor has admitted that he wasn’t a cool kid while growing up in Orange County, California, high school.

"I know everybody says this, but in high school, I really was the dorky kid," he told Orange Coast magazine in 2014. "I was into magic and theme parks. I was very innocent. When a lot of kids my age were going out drinking on Friday and Saturday nights, I was at Disneyland, going on the rides and listening to the bands."

How times have changed!

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Stamos went on to star as ultra cool Uncle Jesse on "Full House" in 1987, a role he will be reprising in the upcoming Netflix series, "Fuller House."

That, of course, happened after his acting debut on "General Hospital" and a touring gig with The Beach Boys.