The star cuddled up to her eight-month-old boy, planting a kiss on his cheek as he chuckled away at the camera.
Mum-of-two Michelle, 35, simply captioned the shot: "Love is…" How cute!
Michelle also has two-year-old Faith with her hubby Hugh Hanley, and we reckon the little ones have already inherited their parents' good looks!
The Liberty X star is a serious fitness fanatic and released a fitness DVD called Active Pregnancy just a few months after AJ was born this February.
But we're also pleased to report that Michelle does allow herself an indulgence every now and then.
After a supermarket dash on Saturday (11 October), Michelle stocked up on a box of 12 doughnuts… which she planned to demolish all by herself!
Michelle said: "& yes your eyes don't device you .. They are all for me! #ideservethem lol ; ) xx."
After working her way through a number of the sugary treats before she even got home, Michelle shared another picture of her progress.
She told her Twitter followers: "You think I'm kidding .. When I go, I'm gone! Doesn't happen often, two down, ten to go! & I'm not even home yet!"
Sounds like a pretty great car journey to us, Michelle!
What's your favourite food treat? Tell us below, as the best comment from across the website each week wins £50!
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