Jessica, 32, uploaded the sweet to her Twitter account on Wednesday evening (5 June) with the simple caption: "My loves."
Little Maxwell is quite the cutie, isn't she?!
The one-year-old is preparing to become a big sister for the first time as Jessica and former American football player Eric are expecting their second child together.
Jessica has already revealed she's having a baby boy, memorably making the announcement by accident during a live TV interview back in March when she was discussing her morning sickness.
"It's a total different pregnancy," she said. "I just feel awful. I've been vomiting. I had no idea that a wiener can make me nauseous. Oh shucks! Well I guess told the world that I was having a boy."
Jessica is sharing her pregnancy experience with best friend Cacee Cobb, who is expecting her first child with Scrubs star husband Donald Faison.
The two mums-to-be were seen looking beautiful at Cacee's baby shower earlier this month – no doubt they're sharing plenty of tips as they count down the days until they meet their little ones!
Meanwhile, it's been claimed in the US that Jessica is hoping to tie the knot with Eric "a few months" after the birth of their child.
The couple, who were introduced by friends and began dating in May 2010, became engaged the following November, but wedding plans were put on hold with the arrival of little Maxwell, and then the news of Jessica's second pregnancy.
Jessica famously said earlier this year: "We've had two different wedding dates, but he keeps knocking me up! We're doing it very backwards, I know... I don't know, I'll just keep my legs crossed, I guess, this time."
A source told Us Weekly: "Jessica said, 'Let's have this wedding already before I get pregnant with another one!'"
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