(Photo Credit: Robin Marchant/Getty Images)

"Jersey Shore" star Jennifer "JWoww" Farley, 27, and fiance Roger Mathews, 37, announced Wednesday that JWoww was pregnant with their first child.

The reality star posted a picture of the sonogram on her website with the caption, "We couldn't have wished for a better gift this Christmas!"

Naturally, fellow "Jersey Shore" alums wanted to give their friend a big congratulations on her first baby.

Read: 'Jersey Shore' Star JWoww Pregnant With First Baby

JWoww even posted the advice Snooki had texted to her.

"Sleep safe, keep hydrated, no Advil or Aleeve," Snooki wrote, and "No pushing on the toilet either."

Snooki always says just what's on her mind.

Samantha "Sammi Sweetheart" Giancola also posted congrats, writing "I am so beyond excited for such an amazing great couple @ JENNIWOWW & @ RogerMathewsNJ !! Congrats love you!."

Vinny Guadagnino did the same, tweeting "Big congrats to @ JENNIWOWW and @ RogerMathewsNJ expecting their first baby. Love you guys."