The blonde songstress and proud mother-of-two posted a cute photo of her eight-month-old son on Instagram yesterday (9 February), showing him slouched in a pushchair and displaying a pinchable set of chubby cheeks.
Along with the candid snap, she wrote: "Ace has stolen my heart."
Since joining Instagram last month, Jessica has been treating fans to a number of pictures of her family, including daughter Maxwell, fiancé Eric Johnson and younger sister Ashlee.
But of course the former reality TV star has also been sharing a few selfies with her followers too and, over the weekend, she couldn't resist showing off the results of her recent weight loss.
It's no secret that Jessica has been working hard to shift her post pregnancy weight after giving birth to Ace last June.
She has been exercising more and sticking to a diet designed for her by Weight Watchers and is now so happy with her new figure that she's eager to make the most of it by wearing a little black dress.
Next to her latest sexy selfie, which was taken on a photo shoot, Jessica wrote: "Too proud to sit down!!"
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