Credit: Photo via Twitter Photo: Teresa Giudice Wears a Feather Headpiece

Teresa Giudice's got a secret! The Real Housewives of New Jersey star took to her Twitter to reveal that she has a project in the works, but she wasn't ready to reveal the details yet.

"Guess who's in jersey with me? My girl @HeatherMaclean! Guess what we're working on? Something exciting.....!!!!!" Teresa teased.

When one of her followers speculated that maybe Teresa is expecting her fifth child, the mama shot down the possibility immediately.

"Its definitely not that! ;)" Teresa clarified.

Considering that Heather Maclean is the bestselling author that Teresa worked with on her cookbooks, we're guessing that the mystery project is another book. We'll be sure to keep you posted on any new developments we learn!

Do you think Teresa has another recipe book coming? Share your theories in the comments below!