Paulina Gretzky and Dustin Johnson's baby boy is starting to look more like his parents these days.

Paulina Gretzky Was Her Dad's 'Best Hockey Player'

On Sunday, Gretzky took to Instagram to post a new photo of her six-month-old son, Tatum, who's looking more grown up. With his light brown hair and sparkling blue eyes, he stares into the camera as his mommy says how much she misses him in the caption.

 Missing my lil guy so much right now!!!!

A photo posted by Paulina Gretzky (@paulinagretzky) on Jul 19, 2015 at 1:07pm PDT

As Tatum develops into his parents' striking good looks, his daddy has been working hard in his golf tournaments. Even though he fell one stroke short at the U.S. Open earlier this summer, Johnson said the only thing that truly matters is his family.

Dustin Johnson Says Being A Parent 'Changes Your Perspective'

"At the end of the day, it's just golf," he said via USA Today. "I've got my family and that's most important to me. My trophy at the end of the day is holding up my little man. I couldn't be more proud of myself and my family. No matter what I'm going to keep my head high and happy."

The golfer gave more details on how proud he is despite the fact that the game didn't go as well as he had hoped.

"I'd disappointed that I three-putted the last hole. Other than that I had a damn good week," he said. "I'm happy with the way I played. I'm happy with everything in my game right now."