Nicole "Snooki" Polizzi has revealed she is pregnant with a baby boy.

The 31-year-old "Jersey Shore" star announced the news in a YouTube video Thursday with the help of son Lorenzo.

Polizzi is already parent to 6-year-old Lorenzo and 4-year-old daughter Giovanna with husband Jionni LaValle.

She announced the sex of her unborn third child at a party with family and friends.

"Thank you all for your support. We are so excited," Polizzo told fans in her post. "Today is a special day because it's our reveal party."

"I decided that Lorenzo is going to hit a baseball, and the baseball's going to come out with that powder -- it's going to be blue or pink," she said.

The video shows LaValle practicing swings with Lorenzo before tossing the baseball to his son. The six-year-old swung and hit the ball, sending blue powder flying out.

"It's a boy!" Polizzi and her loved ones exclaim.

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The "Jersey Shore" star announced her pregnancy during her family's Thanksgiving celebration in November.

"What I'm thankful for this Thankgiving #family," she captioned a photo of Lorenzo and Giovanna holding a sonogram.

Polizzi came to fame on the MTV series "Jersey Shore" and returned this year in the sequel "Jersey Shore Family Vacation."

The show was renewed for a third season this month.