Pauly D Before the Muscles — You Won't Believe Your Eyes! (PHOTOS)

Believe it or not, there was actually a time when the beefed-up Pauly D was — dare we say — scrawny.

Click through the gallery to see flashback photos of the Jersey Shore DJ before he bulked up. Do you think he looks completely different, or pretty much the same? Let us know in the reaction buttons below!

Catch the series finale of Jersey Shore on Thursday, December 20 at 10 p.m. ET/PT on MTV.

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