Molly Sims is loving being a mom of three!

The beautiful actress took to Instagram on Wednesday, Jan. 24 to share a sweet new photo of her baby son, Grey — and he is the most precious little newborn on the planet!

"Just Lounging #2Weeks #MyBearBoomBoom #MyBabyGrey #GettingIntoAGroove," the 43-year-old actress captioned the sweet snapshot of her little boy cuddling up in his pajamas.

Molly previously welcomed her third child with her husband, Scott Stuber, on Jan. 10. "Welcome to the world, Grey Douglas Stuber. 1.10.17. Words do not express how grateful and happy we are to have another piece of magic added to our little tribe! #Blessed?#TribeOf5," the star captioned the first Instagram photo of herself and her newborn baby boy at the time of his birth.

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The couple revealed they were expecting Baby No. 3 back in August 2016, which was news that was much to their surprise! "We never expected it would happen, we didn't even know. This is such a true surprise, I think that's why I'm so emotional," Molly said in the exciting announcement.

Molly and Scott — who married in 2011 — are already parents to two older children, Brooks, 4, and Scarlett, 21 months. Shortly after Grey came home from the hospital, the model took to Instagram to share sweet pics of the siblings meeting their baby brother for the first time.

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And that's not the only cute photo she's shared with her fans since welcoming her little bundle of joy a few weeks ago! During her first days home with baby Grey, the stunning star posed with her three adorable children on Instagram for a sweet new family photo. "Our bed got a little more crowded ?❤?#MilkTime? #MommaLooksTired," she captioned the family pic. Talk about a perfect brood!