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OTRC: Snooki's first ultrasound in 'Snooki & JWoww' trailer - Video

Snooki & JWoww appear in a promotional photo for the fifth season of the MTV show 'Jersey Shore' in 2011. (MTV)

Nicole "Snooki" Polizzi's first ultrasound is featured in the trailer for her new MTV reality series with "Jersey Shore" co-star Jenni "JWoww" Farley called "Snooki & JWoww."

The 24-year-old is seen in the trailer, which can be viewed below, revealing her pregnancy and engagement to best friend JWoww.

After hearing the news, JWoww asks, "How did this happen?"

"Sex," Snooki replies.

JWoww accompanies Snooki and her fiance Jionni LaValle to the ultrasound. The couple announced her pregnancy in March. "Honestly, I didn't know I can make a baby," Snooki said in the preview. "So the fact that I can reproduce is very scary."

MTV announced on March 19 that it has picked up "Jersey Shore" for a sixth season and that all the cast members will return. The new season will film in the show's original location of Seaside Heights, New Jersey.

"While things will definitely be a little different this time when they hit the boardwalk, their trademark hilarity and family dysfunction will remain the same," MTV's statement said.

It is unclear if Polizzi will be living in the house with her fellow cast members. JWoww and Snooki are not the first cast members to get their own spin-off. Co-star Paul "Pauly D" Delvecchio debuted his show, "The Pauly D Project," in late March.

"Snooki & JWoww" premieres on June 21 at 10 p.m. on MTV. Check out the preview for the show below.

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