01/28/2015 08:56 EST | Updated 01/28/2015 08:59 EST

Paulina Gretzky Looks Gorgeous In New Pic With Baby Boy

Being a mom seems to suit Paulina Gretzky!

The NHL heiress—who gave birth to son Tatum on Jan. 19—shared an adorable snap of her holding her baby boy Tatum on Instagram Wednesday morning. And naturally, the 26-year-old looked gorgeous.

Goodnight 🌙 ❴pajama bottoms by @maisondusoir and pajama top by Love & Grace❵ #blackandwhite #stripes

A photo posted by Paulina Gretzky (@sunkissedtraveler) on

The model piled her blond hair into a chic topknot and sported a Love & Grace black pajama top and striped bottoms by luxury sleep and loungewear brand, Maison Du Soir.

Even though he's just over a week old, tiny Tatum already looks bigger than when we were first introduced to him last week. Like mother, like son, Tatum also sports a head full of blond hair!

Already, the Maxim cover girl is aching to go back to her pre-baby body. Last week, Paulina posted a meme on Instagram that read, "I just can't be lean" and captioned the pic "Too soon?"

We're not surprised Dustin Johnson's other half is anxious to return to her pre-baby figure. After all, this is the woman who spends half her life in bikinis!

Looking good, girl!

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