Jwoww's gone from "Jersey Shore" to the runway!

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The curvaceous star -- who's no stranger to showing skin -- was a special celebrity model during the Richie Rich show as part of Mercedes-Benz Fashion Week last night, where she hit the catwalk in a glittery, see-thru sequined gown!

Jwoww wasn't the only celeb model in the show -- skater and reality TV star Johnny Weir walked as well, strutting his stuff in a Tarzan-like loincloth.

Richie's used to using famous faces in his show -- Ellen DeGeneres hilariously modeled for him back in September.

Check out the fashion photos!

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