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Tiffani Thiessen welcomes second child, Holt Fisher — and shares adorable photo

/ Source: TODAY

It's a boy!

Tiffani Thiessen welcomed her second child on Wednesday, and the proud mom took to Instagram to share an adorable photo of her newborn son being held by her 5-year-old daughter, Harper Renn.

"Yesterday Harper got a little brother! We are so excited to introduce Holt Fisher Smith. Our perfect sweet little man. #weareblessed #familyoffour," Thiessen, 41, wrote alongside the image of her two kids.

During her pregnancy, the "Saved by the Bell" and "Beverly Hills, 90210" alum expressed how excited she and husband Brady Smith were to expand their family, via her blog.

"It’s amazing to me to think that in just a short amount of time our family will have the sounds of a little baby in our home again," she wrote. "We couldn’t be more excited. And Harper… is she ever."

MORE: Tiffani Thiessen talks 'Saved by the Bell' (and kissing Zack Morris)

In February, Thiessen visited TODAY to talk about how she’s throwing dinner parties for friends on her new Cooking Channel show, “Dinner at Tiffani’s" — watch the video below.