Jessica Simpson just tweeted a photo of her daughter Maxwell playing in the sand in Hawaii next to the words "BIG SIS" .... which can only mean one thing -- JESSICA'S PREGNANT!!!!
The rumors have been swirling for weeks -- but Jessica has been mum about the mom situation ... until now.
Jessica gave birth to her first child, Maxwell Drew Johnson, back on May 1.
The big question -- how will the pregnancy affect her $4 MILLION deal with Weight Watchers?
9:18 AM PT -- Weight Watchers just posted a tweet, congratulating Jess on the news:
"Congrats to @JessicaSimpson, Eric and big-sister-to-be Maxwell! Your WW family is so thrilled for you. What an amazing year you've had!"