Sammi "Sweetheart" Giancola and Deena Cortese are true New Jersey gals -- and the fun-loving MTV duo just spent some quality time with some well-known, familiar faces from the Garden State. That's right, it's a Jersey Shore and Real Housewives of New Jersey crossover event!

The former Seaside Heights residents posed with the Bravo ladies -- specifically, from left, Siggy Flicker, Jacqueline Laurita, Kathy Wakile and Dolores Catania -- at the premiere party for the reality series. Looking sharp, ladies!

Meanwhile, Sammi and Deena both shared an identical photograph from the premiere party — a complete 180 from their days at the t-shirt shop and nights at Karma.

"Samantha thank you for being there for me mama I love you @sammisweetheart," Deena captioned the Instagram image above. Wonder what their taglines would be ...

In addition, Jacqueline added a pic with the JS pair — and added that they were "sweet girls" (we agree).

Check out a few more photos from the bash below, and share your fave Sammi/Deena memories in the comments!