Paulina Gretzky's fiance just can't get enough of his family.

Paulina Gretzky Is Her Father's 'Best Hockey Player?'

On Tuesday, the golfer took to his Instagram page to post a photo of his lady and their baby boy, Tatum, as they sleep in a bed together. Looking super comfortable in their peaceful state, the child rests on his mommy's chest.

In the caption, Johnson said these two are his "world."

 My world!!! @paulinagretzky #teamusa

A photo posted by Dustin Johnson (@djohnsonpga) on Oct 6, 2015 at 4:56am PDT

Paulina Gretzky & Her Son Travel To See Dustin Johnson, See PHOTO

Meanwhile, Gretzky managed to get her figure back after giving birth to her son last January. In her latest social media picture, she goes on a walk through a "Korea" town where she dons a black top and jeans. Her tiny waist stands out as she keeps up with her iconic hourglass shape in her snapshots.

 American Girl in Korea @sunkissedtraveler

A photo posted by Paulina Gretzky (@paulinagretzky) on Oct 6, 2015 at 5:53am PDT

Last month, Gretzky added another photo to her page where she showed off her striking bikini bod as she enjoyed the last days of summer. Joined by a furry friend, the model sits on a pool chair and smiles for the camera in her colorful swimsuit.

 Little Miss Daisy @sunkissedtraveler

A photo posted by Paulina Gretzky (@paulinagretzky) on Sep 19, 2015 at 1:30pm PDT

Gretzky is one of the most popular models on Instagram with more than 390,000 followers to date.

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Paulina Gretzky, Dustin Johnson