Jessica Simpson posted photos of her son Ace, 18 months, hanging out on a tennis court via Instagram on Friday, Jan. 23

A match with Maxwell? Jessica Simpson shared adorable Instagram photos of her baby boy Ace trying his hand at a game of tennis on Friday, Jan. 23.

Little Ace, 18 months, looked up at his famous mom while being surrounded by several rackets and a tennis ball. He wore cute booties, maroon-colored pants and an "89" long-sleeve top. "ACE!!!" Simpson captioned the sweet pic.

In a second black-and-white snapshot, Ace (look at those blonde locks!) smiled big while wearing a "Nice" T-shirt. "Knute!!!" Simpson, 34, wrote, referencing to his middle name.

The fashion designer last shared a pic of her growing boy last month. At the time, he showed off his adorable piano skills. Simpson captioned: "New York State of Mind."

"Just the way I was with Maxwell, I'm excited to see Ace grow into his own person and watch his personality develop more each day," Simpson told Parents magazine in October 2013. "We see different parts of our family in each of them. I'm lucky to have found the best man [Eric Johnson] to start my family with. We are so blessed."