Gym, Tan … Reunion?

The cast of the Jersey Shore got back together to celebrate Sammi "Sweetheart" Giancola's 30th birthday party — and shared pics from the epic night out.

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"Such an amazing night celebrating Sams 30th! l love all these ladies so much," former castmate Deena Cortese captioned a photo alongside Nicole "Snooki" Polizzi and Jenni "JWoww" Farley.

The gang all came together to celebrate at NYC hotspot Beautique, where Sammi handed out Jersey Shore Cosmetics gift bags!

Vinny Guadagnino was also at the birthday event and shared more photos with his followers on Instagram.

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"Remember these f–ks?" he joked. "At Sammi's bday but she's not in the pic."

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Remember these fucks? At sammis bday but she's not in the pic

A post shared by Vinny (@vinnyguadagnino) on

He also explained the absence of fan-favorites Mike "The Situation" Sorrentino, Pauly D, and Sammi's ex-boyfriend Ronnie Ortiz-Magro.

"The rest of the guys were GTLing," he added.

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The birthday girl clearly had a fun night, writing, "Thank you so much to @beautiquedining for hosting my 30th Birthday party this weekend! Everything was perfect & food was delicious! I can't wait to come back and celebrate again!"

This is not the first time the cast has reunited since the MTV series came to an end in 2012.

From club nights to weddings, the gang is always up for a good time.

"I'm not in touch with everybody," Vinny told E! last year. "Some people were closer than others. I went to Jenni's wedding and I saw everybody over there."

We wonder who called the cabs? For a look at the cast then and now, click through the gallery below!