Tiffani Thiessen Welcomes Second Child Holt Fisher -- See the Adorable Pic!

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Congratulations are in order for Tiffani Thiessen!

The 41-year-old Saved by the Bell actress and her husband, actor Brady Smith, welcomed their second child on Wednesday, son Holt Fisher Smith. Tiffani took to Instagram to share the adorable first photo of her son, who's being held by his big sister, the equally cute 5-year-old Harper Renn.

"Yesterday Harper got a little brother!" Tiffani wrote. "We are so excited to introduce Holt Fisher Smith. Our perfect sweet little man. #weareblessed #familyoffour."

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Tiffani revealed she was expecting her second child in January. She and Brady have been married since July 2005.

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Check out 11 more celebrity baby bumps to keep an eye on this summer in the video below!