Tiffani Thiessen attends a Children's Museum event with her family

Tiffani Thiessen and her husband Brady Smith are welcoming a new addition to their growing household. The “Dinner at Tiffani’s” host and former “Saved By the Bell” star gave birth to a baby boy, Holt Fisher Smith, on Wednesday (July 1).

The actress shared the news herself on Instagram with a photo of Holt and his big sister, 5-year-old Harper Renn.

“Yesterday Harper got a little brother! We are so excited to introduce Holt Fisher Smith,” she writes. “Our perfect sweet little man. #weareblessed #familyoffour”

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Thiessen first revealed she was expecting her second child in January. Not long after, in February, she appeared on “The Tonight Show Starring Jimmy Fallon” with her baby bump on display when the cast of “Saved By the Bell” reunited for a sketch.

Posted by:Chris E. Hayner

Chris E. Hayner is equal parts nerd, crazy person and coffee. He watches too much TV, knows more about pro wrestling than you do and remembers every single show from the TGIF lineup. You may have seen him as a pro-shark protester in "Sharknado 3." His eventual memoir will be called "You're Wrong, Here's Why..." TV words to live by: "I'm a firm believer that sometimes it's right to do the wrong thing."