“Be cool and kiss the camera mom” – Maxwell Drew,” the singer-turned-entrepreneur, 35, captioned the pouty pose with her daughter.
She went on to share a shot of her son cuddling with baby Jagger — her sister Ashlee Simpson‘s 6-month-old daughter.
“Ace and Jagger #COUSINS,” she wrote.
The proud mama also posted two photos of her long-haired boy.
“Mom and Dad will never know” #WHENABEAUTIFULSONHIDES #ACEKNUTE,” she captioned an image of her tot in a planting pot.
And she captioned a beach photo: “Ace always finds his way somewhere happy.”
Ace and Jagger #COUSINS A photo posted by Jessica Simpson (@jessicasimpson) on
Ace always finds his way somewhere happy A photo posted by Jessica Simpson (@jessicasimpson) on