Deena Cortese is pregnant.

Deena Cortese

Deena Cortese

The 'Jersey Shore' star and her husband Christopher Buckner will welcome their first child into the world in December and they already know they are expecting a little boy.

Deena took to Instagram to share a gallery of photos taken by Magic Toast Photography that included her and her husband in front of a sign decorated for the Fourth of July holiday with "We're Excited to Say a Little Firecracker is on the Way!" written in red, white and blue text, ultrasound pictures, the couple holding blue balloons, and their dog next to a placard which read, "It's official. I'm getting a new best friend. Guard dog duty starts December 2018."

Alongside the images, Deena made her happy announcement.

She wrote: "Chris and I decided to wait until we were ready to spill the beans! [Blue heart emoji] Now that we are safely into our second trimester.. us and our little monkey are ready to tell the world Our little family is growing !

"We have a sweet little boy on the way! We are truly blessed and our hearts are filled with so much joy and happiness [blue heart emoji] December can't come soon enough!(sic)"

And the 31-year-old star also revealed the youngster will be named after his father.

She added: "Daddy and Mommy can't wait to meet you Christopher John [heart emoji] you are going to be the most spoiled little boy ever!!!!(sic)"

Deena and Christopher got engaged in Mexico in 2016 and married last October at Laurita Winery in New Egypt, New Jersey.

Her 'Jersey Shore' castmates, including Jenni 'JWoww' Farley, Vinny Guadagnino, Paul 'DJ Pauly D' DelVecchio, Nicole 'Snooki' Polizzi and Mike 'The Situation' Sorrentino, were all in attendance for the big day.