Pretty much everyone already knew that Jessica Simpson blew her deal with Weight Watchers by getting herself knocked up again mere minutes after shedding the weight she gained from her first pregnancy earlier this year.

But for those of you who didn't know, now you have your confirmation.

Simpson took to Twitter and wrote “Merry Christmas from my family to yours!” and included a photo of daughter Maxwell Drew Johnson playing in the sand above the words “BIG SIS” scratched out on the ground below her.

It'll be Simpson's second baby with fiance/former NFL player Eric Johnson, but probably not her last -- since she doesn't seem terribly clear on how exactly these things happen.

This isn't the first time Jessica has used Twitter to announce the state of her uterus -- last October, she (again) revealed the world's worst kept secret by posting a picture of herself dressed as a mummy with the puntastic missive, "It's true, I'm going to be a mummy!"

For her second pregnancy, she backed up the tweet by flat-out saying she's preggers in a new Weight Watchers commercial (seen below).

"It's wonderful news and we couldn't be happier for Jessica, Eric and big sister-to-be Maxwell," said Cheryl Callan, Weight Watchers' Senior Vice President of Marketing, who apparently realized it's better to feign joy than to admit your company just got a $4 million hickey.

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