Former Jersey Shore stars Snooki, Vinny Guadagnino and Sammi "Sweetheart" Giancola have all sent their well-wishes Jenni "JWoww" Farley's way after she announced her pregnancy on Christmas Day.

JWoww and fiance Roger Mathews posted an image of an ultrasound of their future Guido or Guidette online on Christmas with the message, "Roger and I couldn't have asked for a better Christmas gift this year!"

JWoww's BFF Snooki immediately tweeted about the news, writing, "IM SO EXCITED MY BEST FRIEND @JENNIWOWW IS PREGNANT! Finally we can be MOMS together ?????? love you boo!" While Vinny added, "Big congrats to @JENNIWOWW and @RogerMathewsNJ expecting their first baby. Love you guys."

Sammi Sweetheart wrote, "I am so beyond excited for such an amazing great couple @JENNIWOWW & @RogerMathewsNJ !! Congrats love you!"

JWoww is set to become the third star from the hit MTV series to be a parent. Snooki gave birth to son Lorenzo with fiance Jionni LaValle in August 2012, and Pauly D became a dad when he revealed he found out he has a love child with a woman he met while in Las Vegas last year. Paternity tests confirmed that Pauly, real name Paul Delvecchio, is the father and he's now trying to get custody of daughter Amabella.

JWoww shared a screenshot of a text conversation she had with Snooki after the announcement was made, and Snooki had some pregnancy advice for her pal.

"Sleep safe, keep hydrated, no Advil or Aleve," she wrote, followed by, "No pushing on the toilet either."

She also got graphic, writing, "your vag is gonna rip and ull prolly s**t on ur doctor."

JWoww simply replied, "I already know I'm gonna crap everywhere."

JWoww and Mathews got engaged in September 2012. They met while filming "Jersey Shore."