Jenni "JWoww" Farley has revealed she's expecting a baby girl with Roger Mathews, her fiance.

The 27-year-old Snooki & Jwoww and former Jersey Shore star was "super excited and super emotional" to find out the gender, according to Us Weekly.

"I pictured a boy this whole time, so when I saw 'girl' on the paperwork, I was like, 'No way!' But deep down I think I knew... She will be my best friend and daddy's little girl. I can't wait for everything from her first steps to her first dance class."

Farley, who is over four months pregnant with the couple's first child, told Us she's excited for co-star Nicole "Snooki" Polizzi's one-year-old son Lorenzo to have a friend close in age.

"Lorenzo is gonna have a BFF, and I couldn't be happier!" she said.

Farley and Mathews, 37, are apparently already thinking down the road to their daughter's teenage years.

"I was a teenage girl once, and, boy, do I know how sneaky we can be! Karma is gonna kick me in the butt with her!" Farley joked.

"[Roger] was just saying today what kind of car she'll get for her sweet 16 if she gets good grades," the reality TV star told the magazine, adding that her fiance "hasn't stopped talking" about the news.

"I'm like, 'Pump the brakes! Let's get through the first 16 months!'"
Farley announced on Christmas Day she and Mathews are expecting a baby. The pair got engaged in September 2012 after two-and-a-half years of dating.

In addition to Polizzi, Jersey Shore co-star Paul "Pauly D" DelVecchio also recently had a child. DelVecchio, 26, revealed in late October he's a father after he had knocked up a girl in Las Vegas and she gave birth to his daughter named Amabella in May 2013.

Polizzi, 26, gave birth to her first child with fiance Jionni LaValle in August 2012.