Tiffani Thiessen
is adding a new addition to her already adorable family! 

The "Saved by the Bell" alum announced via a sweet Instagram post that she is expecting baby number 2 with husband Brady Smith.  

The actress shared the news accompanied by a cute professional photo of her hubby and their 41/2 year-old daughter Harper.

A photo posted by Tiffani Thiessen (@tathiessen) on

"We are excited to announce the news that we are expecting. Harper could not be more thrilled to have a sibling and a playmate.  Photo by @elizabethmessina," she captioned the shot.  

Thiessen has been vocal about wanting to expand her brood. In a recent interview with online magazine Sweden With Love, she revealed that she was working on having another child and exactly who was putting the pressure on her to get pregnant.  

"She puts more pressure on me than anyone!  Every day she begs me to have a baby," the 40-year-old revealed.  "Every morning she wakes up and says, ‘Is there a baby in your belly?'  She thinks it grows overnight while we’re sleeping.  Then she looks at me and says, 'You're not growing a baby, Mommy!'"

Looks like little Harper is getting her wish for another sibling, Congrats to the happy family!

What do you think of Tiffani's exciting baby news? Sound off in the comments section below then click "Launch Gallery" to see more expecting celebs!