Jackson Lee/Star Max

Update: Simpson took to Twitter Christmas Day to confirm her pregnancy, posting a picture of daughter Maxwell Drew with the words "Big Sis" written in sand.

Seven months after giving birth to her first child, daughter Maxwell Drew Johnson, Jessica Simpson and fiance Eric Johnson are expecting their second child, US Weekly exclusively reports. "It definitely wasn't planned. But yes, Jessica is pregnant again," a source reveals to the magazine. 

Jessica announced her first pregnancy via Twitter in October of last year well after most had already assumed the "With You" singer was expecting. "It's true," she tweeted, along with a photo of herself in her Halloween costume. "I'm going to be a mummy."

Simpson or Johnson have yet to confirm the pregnancy, but if it's anything like last time, it might be quite some time before Jessica admits baby No. 2 is on the way. Take your time announcing it, Jess. And in the meantime, congrats!