“Pooped,” the proud mama, 37, captioned the image of her baby boy resting his head while sitting in the high chair.
Last month, the actress shared birthday greetings for her youngest son.
“Happy birthday my prince,” she captioned the series of snapshots.
In the photos, the actress was all smiles with her birthday boy and husband Andrew Form and their 3-year-old son Julian.
In April, the Lethal Weapon star rocked the red carpet with her sons at the Zimmer Children’s Museum We All Play event in Los Angeles, Calif.
In March, the Fast Five actress and her family-of-four enjoyed a getaway in Hawaii.
The Secrets and Lies star welcomed both sons via gestational carrier.
Continue looking through our gallery to see more Brewster-Form family pics…