It’s a boy for Tamera Mowry-Housley!

Tamera Mowry-Housley grew up in front of our eyes — and now the "Sister, Sister" star has a child of her own.

The 34-year-old, who now appears in the STYLE network reality series "Tia & Tamera" with her twin sister, welcomed a son Monday in Los Angeles. She and her husband, Fox News correspondent Adam Housley, named their baby boy, who weighed in at 9 pounds, 5 ounces, Aden John Tanner Housley.

Tamera married Housley in May 2011 at a vineyard in California's Napa Valley. Among the bride's eight bridesmaids was her matron of honor and sister, Tia. Tia — who has a 1-year-old son, Cree — is already celebrating the new addition to their family. "Yay!!! I can finally now say! I am an auntie," she tweeted on Tuesday. "Can we say chunk munk!!! So happy & blessed! Cree now has a play date! He is [beautiful]!"

Last year — before she was even pregnant — Tamera talked about picking up parenting tips from Tia. "When my sister was pregnant, she told me everything that I needed to know about pregnancy," the actress told Us Weekly. Leading up to her delivery date, Tamera told her Twitter followers that she was enjoying the calm before the storm. "Learning to enjoy the peace and quiet now before I deliver my lil angel," she wrote.

Goodbye, peace and quiet. Hello, baby!

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