Jessica Simpson confirms 2nd pregnancy with Twitter pic

• The singer posts a photo of her baby daughter on the beach with "BIG SIS" written in the sand
• Her daughter, Maxwell, was born in May, and speculation has been building that Simpson was pregnant again
• Celebrity watchers are wondering what this will mean for Simpson's Weight Watchers deal

It's official!

Jessica Simpson is expecting another baby with her fiancé of two years, Eric Johnson. The singer confirmed the news today, tweeting a sweet holiday picture of her baby daughter, Maxwell, dressed in a red and white onesie on the beach, with the words "BIG SIS" scrawled in the sand.

"Merry Christmas from my family to yours!" Simpson tweeted.

Simpson gave birth to Maxwell in May. Speculation that the singer was pregnant again has been growing in recent weeks after Us Weeklyannounced the unconfirmed news first in late November.

Celebrity watchers immediately began pondering what a pregnancy would mean for her multimillion-dollar Weight Watchers deal. Simpson released a new commercial for Weight Watchers just five days ago, sharing that through the program she had lost 50 pounds.

But with a baby announcement this adorable, it doesn't look as if Simpson is too worried about any of that right now.