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Tiffani Thiessen, Brady Smith, Harper Renn Smith

Michael Tullberg/Getty Images

Oh, the cuteness.

Tiffani Thiessen and husband Brady Smith have welcomed their second child together, a baby boy they named Holt Fisher Smith.

Their newborn son joins big sister Harper in the family fold—and they're already busy bonding!

"Yesterday Harper got a little brother! We are so excited to introduce Holt Fisher Smith. Our perfect sweet little man. #weareblessed #familyoffour," Thiessen captioned a positively adorable pic of Harper holding a sleeping Holt at the hospital.

That face! The hat! And look how gorgeous little Harper is as well!

Well played, Tiffani.

The former White Collar star and hostess du jour on Cooking Channel's Dinner at Tiffani's cheekily teased E! News about the possibility of trying for baby No. 2 back in December (you do the math).

"My daughter is more pressure than anybody else that I ever get. She wants a sibling so badly," the actress said. Asked if Harper preffered a brother or sister, she said, "Every day is different. It just depends on what kind of mood she's in, I guess."

From what we can see, Harper's good with what she got.

Congrats to the whole family!