"New York State Of Mind"

Zdj?cie zamieszczone przez u?ytkownika Jessica Simpson (@jessicasimpson) Gru 12, 2014 at 6:05 PST

No shirt, no shoes, just a boy and his piano! As if Jessica Simpson’s two adorable children weren’t cute enough, the fashion designer and proud mom, 34, posted a new Instagram shot of her youngest, son Ace, playing the piano on Sunday, Dec. 7. 

"'New York State Of Mind,'" she captioned the picture of the little boy, 17 months, shirtless and wearing Skylar Luna pajama bottoms with cars on them while tickling the ivories.

The tiny tot is growing out his blonde locks, which curled up in the back while he focused on the instrument in front of him. Simpson — who released her last album in 2008 — is known for posting pics of her babies on Instagram, often showing off her gorgeous daughter Maxwell, 2.

“Don't hate me because I'm beautiful #maxidrew,” she captioned one image of the blue-eyed cutie.