Have mercy!

Before John Stamos found Hollywood fame with his starring TV roles on Full House and Grandfathered, he was just a typical high school student attending his prom—and quite a handsome guy, we might add!

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#TBT #Prom #Hair.

A post shared by John Stamos (@johnstamos) on

To join the #ThrowbackThursday (aka #TBT) conversation on Instagram on Thursday, Nov. 26, the 52-year-old actor shared a vintage snapshot of himself standing with his high school prom date. In the photo, John is sporting a white tux accessorized with red ruffles and a matching rose—and a perfectly coiffed hairdo!

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"#TBT #Prom #Hair," he captioned the throwback pic.

Click through the gallery below to see more stars' childhood throwback pics!