Updated: January 15, 2015 9:55 PM ET | Originally published: January 15, 2015 9:55 PM EST

Actress Tiffani Thiessen, best known for playing high school sweetheart Kelly Kapowski in Saved by the Bell, is expecting a baby with actor husband Brady Smith.

“We could not be more excited about extending our family,” she told People.

The couple say their four-year-old daughter Harper Renn couldn’t wait to have a new sibling.

“Every morning she wakes up and says, ‘Is there a baby in your belly?’” Thiessen said.

Read more at People.

Write to Helen Regan at helen.regan@timeasia.com.

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